A242648 - OEIS

A242648

Dirichlet g.f.: Product_{n>=2} 1/(1-1/n^s)^sigma(n).

1, 3, 4, 13, 6, 24, 8, 46, 23, 36, 12, 116, 14, 48, 48, 161, 18, 156, 20, 174, 64, 72, 24, 484, 52, 84, 112, 232, 30, 360, 32, 526, 96, 108, 96, 841, 38, 120, 112, 726, 42, 480, 44, 348, 312, 144, 48, 1864, 93, 357, 144, 406, 54, 888, 144, 968, 160, 180

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..58.

PROG

(PARI) \\ Based on Michael Somos's code for A007896

n=101;

v = vector(n, k, k==1);

for(k=2, n, m = #digits(n, k) - 1; A = (1 - x)^ -(sigma(k)) + x * O(x^m); w = vector(n); for(i=0, m, w[k^i] = polcoeff(A, i)); v = dirmul(v, w));

CROSSREFS

Cf. A000203, A050367, A007896, A242649.