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A178305
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a(0)=1, a(1)=a(2)=1 and a(3k)=a(k), a(3k+1) = a(3k+2) = 2a(k) for k >= 1.
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0
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0, 1, 1, 1, 2, 2, 1, 2, 2, 1, 2, 2, 2, 4, 4, 2, 4, 4, 1, 2, 2, 2, 4, 4, 2, 4, 4, 1, 2, 2, 2, 4, 4, 2, 4, 4, 2, 4, 4, 4, 8, 8, 4, 8, 8, 2, 4, 4, 4, 8, 8, 4, 8, 8, 1, 2, 2, 2, 4, 4, 2, 4, 4, 2, 4, 4, 4, 8, 8, 4, 8, 8, 2, 4, 4, 4, 8, 8, 4, 8, 8, 1, 2, 2, 2, 4, 4, 2, 4, 4, 2, 4, 4, 4, 8, 8, 4, 8, 8, 2, 4, 4, 4, 8, 8
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OFFSET
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0,5
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LINKS
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MATHEMATICA
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a[0] = 0; a[1] = 1; a[2] = 1;
a[n_] := a[n] = If[Mod[n, 3] == 0, a[Floor[n/3]], If[Mod[n, 3] == 1, a[Floor[(n - 1)/3]] + a[Floor[(n + 1)/3]], a[Floor[(n - 2)/3]] + a[Floor[n/3]]]];
Table[a[n], {n, 0, 200}]
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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Definition simplified, Mma notation removed - The Assoc. Eds. of the OEIS, Jul 20 2010
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STATUS
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approved
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