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A263834
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Sprague-Grundy sequence G(i-Mark({2,4}, {2})).
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0
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0, 0, 1, 1, 2, 2, 0, 0, 1, 1, 3, 2, 2, 0, 1, 1, 0, 2, 2, 0, 1, 1, 0, 2, 3, 0, 1, 1, 0, 2, 2, 0, 1, 1, 0, 2, 3, 0, 1, 1, 0, 2, 2, 0, 1, 1, 0, 2, 2, 0, 1, 1, 0, 2, 2, 0, 1, 1, 0, 2, 3, 0, 1, 1, 0, 2, 2, 0, 1, 1, 0, 2, 2, 0
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OFFSET
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0,5
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LINKS
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FORMULA
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For n>=11:
a(n) = 0 if n = 1 (mod 6)
a(n) = 1 if n = 2 (mod 6)
a(n) = 1 if n = 3 (mod 6)
a(n) = 0 if n = 4 (mod 6)
a(n) = 2 if n = 5 (mod 6)
a(n) = 2 if n = 0 (mod 6) and (n/6 is odd or n/6=2^k for even k or (n/6 is not a power of 2 and the largest power of 2 dividing n/6 is an odd power))
a(n) = 3 otherwise
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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More terms and formula from Nathan Fox, Dec 22 2015
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STATUS
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approved
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