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

Author

N. J. A. Sloane, Apr 29 2000

Keywords

• nonn

Crossrefs

Cf. A000031.

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