This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A297963 #15 Jun 08 2022 16:33:02 %S A297963 0,1,4,25,28,29,75,103,200,234,315,364,479,633,802,1054,1173,1311, %T A297963 1894,2058,2173,2419,3244,3648,4249,4474,4982,5943,6133,6809,7429, %U A297963 8590,8654,9419,10284,11728,12152,13884,15493,16623,17312,18389,19745,20528,22111,23472 %N A297963 The smallest position with nim-value n in subtract-a-square game. %C A297963 a(n) is the position of the first copy of n in A014586. %H A297963 Nathan Fox, <a href="http://sites.math.rutgers.edu/~nhf12/em13/project/code_infsubgames.txt">Subtraction Games with Infinite Subtraction Sets</a> %H A297963 Nathan Fox, <a href="/A297963/a297963.txt">Subtraction Games with Infinite Subtraction Sets</a> [Local copy] %e A297963 The sequence of nim-values for subtract-a-square (A014586) begins 0,1,0,1,2; the first position with value 2 is position 4 (starting from 0) so a(2)=4. %Y A297963 Cf. A014586. %K A297963 nonn %O A297963 0,3 %A A297963 _David Eppstein_, Jan 09 2018