A151680 a(n) = sum_{k >= 0} binomial(wt(n+k),k+1), where wt() = A000120().

0, 1, 2, 2, 2, 4, 5, 3, 2, 4, 5, 5, 7, 10, 9, 4, 2, 4, 5, 5, 7, 10, 9, 6, 7, 10, 11, 13, 18, 20, 14, 5, 2, 4, 5, 5, 7, 10, 9, 6, 7, 10, 11, 13, 18, 20, 14, 7, 7, 10, 11, 13, 18, 20, 16, 14, 18, 22, 25, 32, 39, 35, 20, 6, 2, 4, 5, 5, 7, 10, 9, 6, 7, 10, 11, 13, 18, 20, 14, 7, 7, 10, 11, 13, 18

Offset

0,3

Links

Table of n, a(n) for n=0..84.

Crossrefs

Sequence in context: A059888 A299204 A230141 * A231351 A024681 A240327

Adjacent sequences: A151677 A151678 A151679 * A151681 A151682 A151683

Keyword

nonn

Author

N. J. A. Sloane, Jun 01 2009

Status

approved