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A034756 Dirichlet convolution of 3^(n-1) with Bell numbers. 0
1, 4, 11, 35, 96, 310, 932, 3106, 10719, 40956, 175024, 856215, 4745038, 29240098, 195682588, 1397312405, 10523188868, 82994029902, 682464226648, 5833904550458, 51727645023058, 474880276916928, 4506747119506932 (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]*3^(d - 1), {d, Divisors[n]}], {n, 1, 25}] (* Vaclav Kotesovec, Sep 10 2019 *)

CROSSREFS

Sequence in context: A135919 A034755 A297608 * A029853 A104500 A119716

Adjacent sequences:  A034753 A034754 A034755 * A034757 A034758 A034759

KEYWORD

nonn

AUTHOR

Erich Friedman

STATUS

approved

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Last modified June 18 23:16 EDT 2021. Contains 345125 sequences. (Running on oeis4.)