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A024276 Expansion of sinh(tan(x)*sinh(x))/2. 0
0, 1, 6, 131, 6636, 478981, 46186866, 5850470471, 949119838296, 191928333160201, 47247581207762526, 13887944994837826571, 4798123437751335493956, 1923214499293440219360781 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..13.

MATHEMATICA

With[{nn=30}, Take[CoefficientList[Series[Sinh[(Tan[x]Sinh[x])]/2, {x, 0, nn}], x]Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Jan 22 2012 *)

CROSSREFS

A009610.

Sequence in context: A302770 A281402 A137038 * A137037 A101131 A256239

Adjacent sequences:  A024273 A024274 A024275 * A024277 A024278 A024279

KEYWORD

nonn

AUTHOR

R. H. Hardin

EXTENSIONS

Extended and signs tested 03/97.

STATUS

approved

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Last modified October 18 00:21 EDT 2019. Contains 328135 sequences. (Running on oeis4.)