This duplication had been missed by John Horton Conway several years before in his knot table and subsequently found its way into Rolfsen's table.
The mathematician John Horton Conway composed the following arrangement for the first 100 digits,
John Conway's agent-based simulation "Game of Life" was enhanced and applied to Schelling's original idea by Joshua M. Epstein and Robert Axtell in their book Growing Artificial Societies.
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John H. Conway, Heidi Burgiel, Chaim Goodman-Strass, The Symmetries of Things 2008, ISBN 978-1-56881-220-5 (Chapter 26)
Envy-free division was first solved for the 3 player case in 1960 independently by John Selfridge of Northern Illinois University and John Horton Conway at Cambridge University, the algorithm was first published in the 'Mathematical Games' column by Martin Gardner in Scientific American.
Later Willem Abraham Wijthoff studied semi-regular polytopes and this work was continued by H.S.M. Coxeter, John Conway and others.
Paterson's worms are a family of cellular automata devised in 1971 by Mike Paterson and John Horton Conway to model the behaviour and feeding patterns of certain prehistoric worms.
He is best known for co-authorship (with John Conway and Elwyn Berlekamp) of Winning Ways for your Mathematical Plays and authorship of Unsolved Problems in Number Theory (ISBN 0-387-94289-0), but he has also published over 100 papers and books covering combinatorial game theory, number theory and graph theory.