

A266520


E.g.f.: Log( Sum_{n>=0} (n+1)^(2*n) * x^n/n! ).


2



4, 65, 3252, 319422, 51147492, 12057585792, 3922351554132, 1682965461982320, 921043932965502660, 626381920753520549760, 518386843395242486312436, 513135100084662037473481728, 598802670522558079363471420836, 813678320999818358850938259419136, 1273853548265201707125719549854268820, 2276462439285471707026207820594795624448
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..16.


PROG

(PARI) {a(n) = n! * polcoeff( log( sum(m=0, n, (m+1)^(2*m) * x^m/m!) +x*O(x^n)), n)}
for(n=1, 20, print1(a(n), ", "))


CROSSREFS

Cf. A266519.
Sequence in context: A307169 A307185 A206500 * A241705 A015475 A197947
Adjacent sequences: A266517 A266518 A266519 * A266521 A266522 A266523


KEYWORD

nonn


AUTHOR

Paul D. Hanna, Dec 31 2015


STATUS

approved



