A034756 Dirichlet convolution of 3^(n-1) with Bell numbers.

1, 4, 11, 35, 96, 310, 932, 3106, 10719, 40956, 175024, 856215, 4745038, 29240098, 195682588, 1397312405, 10523188868, 82994029902, 682464226648, 5833904550458, 51727645023058, 474880276916928, 4506747119506932

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