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Dirichlet convolution of Fibonacci numbers with Bell numbers.
0

%I #5 Sep 10 2019 12:36:59

%S 1,2,4,9,20,64,216,906,4178,21222,116064,678790,4213830,27645030,

%T 190899972,1382960445,10480143744,82864876682,682076810340,

%U 5832742233094,51724158246750,474869816290526,4506715738475980

%N Dirichlet convolution of Fibonacci numbers with Bell numbers.

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

%K nonn

%O 1,2

%A _Erich Friedman_