A034740 Dirichlet convolution of b_n=2^(n-1) with Bell numbers.

1, 3, 6, 15, 31, 92, 267, 1023, 4404, 21705, 116999, 680790, 4217693, 27653099, 190915798, 1382993235, 10480207683, 82865009684, 682077068303, 5832742772351, 51724159284888, 474869818486877, 4506715742641627

Offset

1,2

Links

Table of n, a(n) for n=1..23.

Mathematica

Table[Sum[BellB[n/d - 1]*2^(d - 1), {d, Divisors[n]}], {n, 1, 25}] (* Vaclav Kotesovec, Sep 10 2019 *)

Crossrefs

Sequence in context: A244712 A006961 A316219 * A367293 A323936 A305839

Adjacent sequences: A034737 A034738 A034739 * A034741 A034742 A034743

Keyword

nonn

Author

Erich Friedman

Status

approved