A012540 - OEIS

A012540

tanh(sinh(x)*arcsin(x))=2/2!*x^2+8/4!*x^4-160/6!*x^6-11072/8!*x^8...

2, 8, -160, -11072, -182912, 50245120, 7608017664, 26249146368, -262793796747264, -58964881233854464, 7005062900187299840, 9928554014089367257088, 2780197098515017535389696

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OFFSET

0,1

LINKS

Table of n, a(n) for n=0..12.

MATHEMATICA

With[{nn=30}, Take[CoefficientList[Series[Tanh[Sinh[x]ArcSin[x]], {x, 0, nn}], x] Range[ 0, nn]!, {3, -1, 2}]] (* Harvey P. Dale, Apr 18 2022 *)

CROSSREFS

Sequence in context: A012432 A071097 A012537 * A346164 A175538 A009606

Adjacent sequences: A012537 A012538 A012539 * A012541 A012542 A012543

KEYWORD

sign

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

STATUS

approved