References to A500074

a(n) = the number of unordered triples of integers (a,b,c) with a+b+c=n, whose bitwise XOR is zero. Equivalently, the number of three-heap nim games with n stones which are in a losing position for the first player.
0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 4, 0, 0, 0, 1, 0, 1, 0, 4, 0, 1, 0, 4, 0, 4, 0, 13, 0, 0, 0, 1


1 seqfan posts

Mon Nov 15 20:48:40 CET 2010    [seqfan] Formula cleanup? Solutions of a modulo difference equation

Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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