A054185 Binomial transform of A000031.

1, 3, 8, 20, 49, 119, 290, 714, 1781, 4507, 11580, 30208, 79941, 214327, 581292, 1592496, 4400765, 12251895, 34326566, 96694866, 273639617, 777444807, 2216341466, 6336999666, 18165573373, 52191551315, 150254448730, 433350470586

Offset

0,2

Links

Table of n, a(n) for n=0..27.

Formula

G.f.: (1/(1 - x)) * (1 - Sum_{k>=1} phi(k)*log(1 - 2*(x/(1 - x))^k)/k). - Ilya Gutkovskiy, Nov 12 2019

Crossrefs

Cf. A000031.

Sequence in context: A048739 A054192 A124523 * A171853 A330458 A093963

Adjacent sequences: A054182 A054183 A054184 * A054186 A054187 A054188

Keyword

nonn

Author

N. J. A. Sloane, Apr 29 2000

Status

approved