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A174473
G.f.: exp( Sum_{n>=1} A174937(n)*x^n/n ) where A174937(n) = Sum_{d|n} d^tau(d).
1
1, 1, 3, 6, 25, 36, 294, 368, 1528, 2484, 9134, 14149, 309394, 338144, 1088916, 2036379, 8135079, 11985949, 85274614, 109840952, 443748960, 721070985, 2618157358, 4074809442, 52689585877, 60956862781, 202828562711
OFFSET
0,3
COMMENTS
tau(n) = A000005(n) = the number of divisors of n.
PROG
(PARI) {a(n)=polcoeff(exp(sum(m=1, n, x^m/m*sumdiv(m, d, d^sigma(d, 0)))+x*O(x^n)), n)}
CROSSREFS
Cf. A174937, A000005 (tau).
Sequence in context: A304186 A288760 A144227 * A148657 A148658 A148659
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Apr 04 2010
STATUS
approved