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A051781 Denominators of Taylor series expansion of (exp(1-exp(x))-1)/(1-exp(x)). 1
1, 2, 12, 24, 45, 1440, 6048, 24192, 3628800, 3628800, 598752, 7096320, 435891456000, 326918592000, 713276928000, 1793381990400, 2667655710720000, 64023737057280000, 25545471085854720000, 51090942171709440000, 16860010916664115200000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..20.

EXAMPLE

1-1/2*x-1/12*x^2+1/24*x^3+1/45*x^4+1/1440*x^5-17/6048*x^6-25/24192*x^7+...

MATHEMATICA

Denominator[CoefficientList[Series[(Exp[1-Exp[x]]-1)/(1-Exp[x]), {x, 0, 20}], x]] (* Harvey P. Dale, Jul 17 2014 *)

CROSSREFS

Cf. A051780.

Sequence in context: A141758 A137496 A195015 * A077562 A146567 A176679

Adjacent sequences:  A051778 A051779 A051780 * A051782 A051783 A051784

KEYWORD

nonn,easy,frac

AUTHOR

N. J. A. Sloane, Dec 09 1999

STATUS

approved

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Last modified December 12 11:56 EST 2018. Contains 318060 sequences. (Running on oeis4.)