A151863 a(0)=1; a(1)=0; a(2)=2; 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.

1, 0, 2, 3, 2, 2, 7, 9, 2, 2, 7, 8, 6, 11, 23, 21, 2, 2, 7, 8, 6, 11, 23, 20, 6, 11, 22, 22, 23, 45, 67, 45, 2, 2, 7, 8, 6, 11, 23, 20, 6, 11, 22, 22, 23, 45, 67, 44, 6, 11, 22, 22, 23, 45, 66, 46, 23, 44, 66, 67, 91, 157, 179, 93, 2, 2, 7, 8, 6, 11, 23, 20, 6, 11, 22, 22, 23, 45, 67, 44, 6

Offset

0,3

Links

Table of n, a(n) for n=0..80.

Formula

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

Crossrefs

Cf. A151843-A151874.

Sequence in context: A272181 A154179 A300862 * A365407 A366782 A134142

Adjacent sequences: A151860 A151861 A151862 * A151864 A151865 A151866

Keyword

nonn

Author

N. J. A. Sloane, Jul 17 2009

Status

approved