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Board of Trustees

David Applegate is a Research Scientist at Google NYC. He joined Google in 2016, after 20 years in research at the AT&T Shannon Research Laboratory and AT&T Bell Labs. He has a Ph.D. in Computer Science from Carnegie Mellon (1991) and a B.S. in Computer Science and Math from the University of Dayton (1984). David was Vice-President of the OEIS Foundation from its beginning in 2009 until 2018.

David’s research interests include large-scale mathematical optimization, networking, combinatorial puzzles, and integer sequences. Among other prizes, he received the Frederick W. Lanchester prize for The Traveling Salesman: A Computational Study and the George Pólya award (MAA, 2013, jointly with Marc LeBrun and Neil Sloane), for “Carryless Arithmetic Mod 10”.

Joerg Arndt is a Professor of programming languages and software development at the Technische Hochschule Nuremberg since 2010. Up until 1995 he studied theoretical physics in Bayreuth and Berlin. He worked in the IT industry until 2006, when he started a PhD in Mathematics at the Australian National University. This was completed in 2010.

His interests include algorithms and high-performance computing, mostly for problems in combinatorics, arithmetic, and q-series. His current research is about plane-filling curves on regular grids. He is the author or coauthor of four books, about the number Pi, arithmetical algorithms, the programming language C, Linux on the S/390 mainframe, and a book Matters Computational about low-level, combinatorial, and arithmetical algorithms.

Ray Chandler studied Mathematics and Physics at Texas Christian University (1968). He enjoyed a 50-year career in IT at various enterprises including Texas Instruments, U.S. Army, Pier 1 Imports, General Dynamics, Atlantic Richfield, Perot Systems, Dell Computers, and NTT Data Services, retiring in 2018.

Ray was one of the original trustees of the OEIS Foundation in 2009 and has been serving in that role ever since. Ray was Treasurer of the Foundation from 2014 to 2017.

Aside from his continued interests in math and computing, he enjoys cruising and traveling and watching sports.

Russ Cox (President) contributed his first sequence to the OEIS at age 16 and later wrote the software for the current site. He is one of the founding trustees of the OEIS Foundation and has served as President since 2021. Russ holds an AB and SM in Computer Science from Harvard and a PhD in Computer Science from MIT. He is a Distinguished Engineer at Google, where he leads the development of the Go programming language.

Harvey P. Dale is University Professor of Philanthropy and the Law and the Director of the National Center on Philanthropy and the Law at NYU. He has been a member of the faculty of the New York University School of Law since 1977, for the last 30 years teaching primarily in the field of nonprofit organizations. Professor Dale is Founding President of The Atlantic Philanthropies and was for approximately 20 years (until September 1, 2001) the President and CEO of the Atlantic Foundation. He served as a Director of the Atlantic Philanthropies from 1982 to 2012. Prof. Dale also was a member of the Trustees Investment Committee of Cornell University from 1996 to 2005. In 2007, he was named a Presidential Councillor by the Cornell University Board of Trustees. He was, from 2001 to 2007, a member of the Overseers’ Committee to Visit the Harvard Law School. He serves as a Director, Trustee, President, or Chair of various charitable organizations both in the U.S. and abroad. He served as an Adviser to the American Law Institute’s project on “Restatement of the Law, Charitable Nonprofit Organizations (2021).” He is a Member of the American Academy of Arts and Sciences. Prof. Dale received his B.A. degree from Cornell University, his J.D. degree from Harvard University, and a degree of Doctor of Laws honoris causa from the University of the Witwatersrand.

Tom Duff spent his career at Lucasfilm, Bell Labs, and Pixar Animation studios, working on computer graphics, mathematics, robotics, optical engineering and a little polymer physics. His awards include the J. W. Graham Medal from the University of Waterloo and two Academy Awards for contributions to motion picture science and engineering.

Charles Greathouse is a Senior Consultant at NYSTEC, advising on cloud computing and related topics.  Prior to that he worked for 13 years at Case Western Reserve University. Charles was Vice President of the OEIS Foundation from 2016 to 2019, securing the first grant to the OEIS, and has been on the Editorial Board since 2009.

Charles's research interests include prime numbers and their gaps, additive combinatorics, high-performance computing, recurrence relations, analytic number theory, mathematical aesthetics, and generative AI. Outside mathematics he enjoys cycling and his family.

Alexander Healy (Secretary) is Chief Investment Officer at AlphaSimplex Group, and holds degrees from Harvard in Mathematics & Computer Science (AB) and Theoretical Computer Science (PhD). In addition to his mathematical interests, Alex is an avid pianist and a member of the board of the Boston Symphony Orchestra.

Marc LeBrun (Vice President) is an ardent recreational arithmetician and autodidact with many decades of experience in the computer industry. A pioneer "hacker" and innovator working in early personal computing ventures and academic AI labs, he subsequently held positions at companies such as Apple (where he was a co-creator of the Macintosh) along with technology leadership roles at Symbolics, Autodesk, Siebel Systems and Adobe. In addition to this corporate experience, he has been a hands-on participant and advisor to numerous startups and early-stage ventures, as well as a mentor and coach to individual professionals. A longtime OEIS contributor, he has actively served the Foundation since 2009 and is currently Vice-President. MAA Pólya Award 2013 (with D. Applegate and Neil Sloane).

Simon Plouffe is an expert on Pi and found many formulas for that number. He collects mathematical constants, sequences, and nice formulas. He is the co-author with Neil Sloane of The Encyclopedia of Integer Sequences (1995). He has been a trustee of the OEIS Foundation since its beginning in 2009.

Robert Roy Price (Treasurer) studied Mathematics and Computer Science at Carnegie-Mellon University. He enjoyed a 45-year career as a scientist at Westinghouse Electric Company, designing commercial nuclear power plants and providing supercomputer services to engineers. He is a past President of the Cray User Group, an international association of Cray Computer owners. He has served as the Treasurer of the OEIS Foundation since 2017.

Lara Pudwell is a Professor of Mathematics and Statistics at Valparaiso University. She has authored over 40 research papers, mostly in the area of enumerative combinatorics. Her work in the classroom has been recognized with the 2014 Henry L. Alder Award for Distinguished Teaching from the Mathematical Association of America and the 2021-2022 Valparaiso University Excellence in Teaching Award.

Outside of the classroom, she is a past Chair of the Indiana Section of the Mathematical Association of America and she is a coauthor of A Mathematician's Practical Guide to Mentoring Undergraduate Research (MAA Press, 2019). She spent a decade directing the Valparaiso Experience in Research by Undergraduate Mathematicians (VERUM) program and is now the Executive Director of MathPath, a selective national residential summer camp for middle schoolers who love mathematics.

Neil J. A. Sloane (Chair) started what is now the OEIS in 1964 while a graduate student at Cornell. He completed his Ph.D. at Cornell in 1967, was Assistant Professor at Cornell from 1967 to 1969, and then was a researcher at AT&T Bell Labs and AT&T Shannon Labs from 1967 to his retirement in 2012.

Neil was the President of the OEIS Foundation from 2009 to 2021 and has served as Chair since then. He is a member of the National Academy of Engineering, a Fellow of the Learned Society of Wales, an American Mathematical Society Fellow, an AT&T Fellow, and an IEEE Fellow. He has received the IEEE Hamming Medal, the MAA Chauvenet Prize, the David Robbins Prize, and the Pólya Award (with David Applegate and Marc LeBrun). He was an invited speaker at the International Congress of Mathematicians in 1998. Over his career, Neil published 12 books and 334 papers with 160 coauthors. He has also published 22 Numberphile videos on YouTube with Brady Haran, with a combined 8 million views. His H-index is 88.

Bridget Tenner is a Professor of Mathematics in the Department of Mathematical Sciences at DePaul University. Her primary research focuses on enumerative, algebraic, and topological combinatorics. Bridget received her AB and AM degrees in mathematics from Harvard University and her PhD from MIT, advised by Richard Stanley. In her spare time, Bridget sings, knits and weaves, and bakes.