A144319 Shifts left when Dirichlet convolution (DC:(b,b)->a) applied 5 times.

1, 1, 32, 1024, 33264, 1064448, 34094080, 1091010560, 34913358688, 1117227985920, 35751328547328, 1144042513514496, 36609361521378304, 1171499568684105728, 37487986231712710656, 1199615559415862673408

Offset: 1

Author

Alois P. Heinz, Sep 17 2008

Keywords

• eigen
• nonn

Links

• N. J. A. Sloane, Transforms

Crossrefs

5th column of A144324.

Programs

Maple

k:=5: 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..25);