The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A034756 Dirichlet convolution of 3^(n-1) with Bell numbers. 0

%I #5 Sep 10 2019 12:39:23

%S 1,4,11,35,96,310,932,3106,10719,40956,175024,856215,4745038,29240098,

%T 195682588,1397312405,10523188868,82994029902,682464226648,

%U 5833904550458,51727645023058,474880276916928,4506747119506932

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

%t Table[Sum[BellB[n/d - 1]*3^(d - 1), {d, Divisors[n]}], {n, 1, 25}] (* _Vaclav Kotesovec_, Sep 10 2019 *)

%K nonn

%O 1,2

%A _Erich Friedman_

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 18 13:40 EDT 2024. Contains 373481 sequences. (Running on oeis4.)