

A009172


Expansion of e.g.f.: cosh(tanh(x)*log(1+x)).


0



1, 0, 0, 0, 12, 60, 90, 420, 12320, 124992, 753480, 6481200, 110644776, 1613081184, 18917874976, 250425171360, 4359533351680, 78311204695424, 1329852024578496, 23869209971687040, 483284209880289152
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OFFSET

0,5


LINKS



MATHEMATICA

With[{nn=20}, CoefficientList[Series[Cosh[Tanh[x]Log[1+x]], {x, 0, nn}], x] Range[ 0, nn]!] (* Harvey P. Dale, Apr 25 2014 *)


CROSSREFS



KEYWORD

sign,easy


AUTHOR



EXTENSIONS

Definition clarified and prior Mathematica program replaced by Harvey P. Dale, Apr 25 2014


STATUS

approved



