A144322 Shifts left when Dirichlet convolution (DC:(b,b)->a) applied 8 times.

1, 1, 256, 65536, 16809856, 4303323136, 1101667434496, 282026863230976, 72198881268083456, 18482913606768459776, 4731625884430073102336, 1211296226414098714198016, 310091833962291289108054016

Offset: 1

Author

Alois P. Heinz, Sep 17 2008

Keywords

• eigen
• nonn

Links

• N. J. A. Sloane, Transforms

Crossrefs

8th column of A144324.

Programs

Maple

k:=8: with (numtheory): dc:= proc(b,c) proc(n) option remember; add (b(d) *c(n/d), d=`if`(n<0,{}, divisors(n))) end end: a:='a': b[1]:= dc(a,a): for t from 2 to k do b[t]:= dc(b[t-1], b[t-1]) od: a:= n-> `if`(n=1, 1, b[k](n-1)): seq (a(n), n=1..20);