A151678 a(n) = sum_{k >= 0} binomial(wt(n+k),2*k), where wt() = A000120().

1, 1, 2, 1, 2, 2, 4, 1, 2, 2, 4, 2, 4, 5, 7, 1, 2, 2, 4, 2, 4, 5, 7, 2, 4, 5, 7, 5, 8, 12, 11, 1, 2, 2, 4, 2, 4, 5, 7, 2, 4, 5, 7, 5, 8, 12, 11, 2, 4, 5, 7, 5, 8, 12, 11, 5, 8, 12, 12, 12, 17, 26, 16, 1, 2, 2, 4, 2, 4, 5, 7, 2, 4, 5, 7, 5, 8, 12, 11, 2, 4, 5, 7, 5, 8, 12, 11, 5, 8, 12, 12, 12, 17, 26, 16

Offset

0,3

Links

Table of n, a(n) for n=0..94.

Crossrefs

Sequence in context: A321319 A048896 A130831 * A273126 A151681 A336138

Adjacent sequences: A151675 A151676 A151677 * A151679 A151680 A151681

Keyword

nonn

Author

N. J. A. Sloane, Jun 01 2009

Status

approved