login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A034769 Dirichlet convolution of Catalan numbers with Bell numbers. 0
1, 2, 4, 11, 29, 98, 335, 1316, 5574, 26038, 132771, 737470, 4421609, 28387672, 193573820, 1392654721, 10515499817, 82994520352, 682554444859, 5834509494401, 51730722356462, 474894282556542, 4506807221010963 (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]*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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 13 06:22 EDT 2020. Contains 336442 sequences. (Running on oeis4.)