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Search: id:A151861
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A151861 a(0)=0; a(1)=1; a(2)=0; for n>=3 if n=2^i + j with 0<=j<2^i then a(n)=2*a(j) + a(j + 1) except we add 1 if j=2^i-1. +0
2
0, 1, 1, 4, 1, 3, 6, 10, 1, 3, 6, 9, 5, 12, 22, 22, 1, 3, 6, 9, 5, 12, 22, 21, 5, 12, 21, 23, 22, 46, 66, 46, 1, 3, 6, 9, 5, 12, 22, 21, 5, 12, 21, 23, 22, 46, 66, 45, 5, 12, 21, 23, 22, 46, 65, 47, 22, 45, 65, 68, 90, 158, 178, 94, 1, 3, 6, 9, 5, 12, 22, 21, 5, 12, 21, 23, 22, 46, 66, 45, 5 (list; graph; listen)
OFFSET

0,4

FORMULA

I would very much like a g.f. for this sequence!

CROSSREFS

Cf. A151843-A151874.

Sequence in context: A134224 A121441 A074813 this_sequence A109531 A073817 A074081

Adjacent sequences: A151858 A151859 A151860 this_sequence A151862 A151863 A151864

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Jul 17 2009

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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