A034769 Dirichlet convolution of Catalan numbers with Bell numbers.

1, 2, 4, 11, 29, 98, 335, 1316, 5574, 26038, 132771, 737470, 4421609, 28387672, 193573820, 1392654721, 10515499817, 82994520352, 682554444859, 5834509494401, 51730722356462, 474894282556542, 4506807221010963

Offset

1,2

Links

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

Mathematica

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

Crossrefs

Sequence in context: A298269 A148148 A148149 * A219017 A285216 A212422

Adjacent sequences: A034766 A034767 A034768 * A034770 A034771 A034772

Keyword

nonn

Author

Erich Friedman

Status

approved