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A034740 Dirichlet convolution of b_n=2^(n-1) with Bell numbers. 0
1, 3, 6, 15, 31, 92, 267, 1023, 4404, 21705, 116999, 680790, 4217693, 27653099, 190915798, 1382993235, 10480207683, 82865009684, 682077068303, 5832742772351, 51724159284888, 474869818486877, 4506715742641627 (list; graph; refs; listen; history; text; internal format)
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 * A323936 A305839 A322110

Adjacent sequences:  A034737 A034738 A034739 * A034741 A034742 A034743

KEYWORD

nonn

AUTHOR

Erich Friedman

STATUS

approved

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Last modified August 7 17:02 EDT 2020. Contains 336277 sequences. (Running on oeis4.)