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A174471
G.f.: exp( Sum_{n>=1} A174472(n)*x^n/n ) where A174472(n) = Sum_{d|n} d^sigma(d).
1
1, 1, 5, 32, 4138, 7371, 362821209, 363768114, 4399869984980, 4692111613957, 100023774005024513, 100145112875103405, 137370551968043406735177291498, 137370551970759432867153686743, 687082347540023318264721577813
OFFSET
0,3
PROG
(PARI) {a(n)=polcoeff(exp(sum(m=1, n, x^m/m*sumdiv(m, d, d^sigma(d)))+x*O(x^n)), n)}
CROSSREFS
Cf. A174472, A000203 (sigma).
Sequence in context: A363314 A203112 A349099 * A275233 A359971 A043068
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Apr 04 2010
STATUS
approved