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The smallest position with nim-value n in subtract-a-square game.
5

%I #15 Jun 08 2022 16:33:02

%S 0,1,4,25,28,29,75,103,200,234,315,364,479,633,802,1054,1173,1311,

%T 1894,2058,2173,2419,3244,3648,4249,4474,4982,5943,6133,6809,7429,

%U 8590,8654,9419,10284,11728,12152,13884,15493,16623,17312,18389,19745,20528,22111,23472

%N The smallest position with nim-value n in subtract-a-square game.

%C a(n) is the position of the first copy of n in A014586.

%H Nathan Fox, <a href="http://sites.math.rutgers.edu/~nhf12/em13/project/code_infsubgames.txt">Subtraction Games with Infinite Subtraction Sets</a>

%H Nathan Fox, <a href="/A297963/a297963.txt">Subtraction Games with Infinite Subtraction Sets</a> [Local copy]

%e 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 Cf. A014586.

%K nonn

%O 0,3

%A _David Eppstein_, Jan 09 2018