A012724 - OEIS

A012724

sinh(arctanh(x)*arcsin(x))=2/2!*x^2+12/4!*x^4+358/6!*x^6+19992/8!*x^8...

2, 12, 358, 19992, 1791882, 235396260, 42624803310, 10177141489200, 3098164254001170, 1171315364214109500, 538446859100064311670, 295771765211446451586120, 191335531681410403898936730

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OFFSET

0,1

LINKS

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

MATHEMATICA

With[{nn=30}, Take[CoefficientList[Series[Sinh[ArcTanh[x]ArcSin[x]], {x, 0, nn}], x] Range[0, nn]!, {3, -1, 2}]] (* Harvey P. Dale, Aug 30 2015 *)

CROSSREFS

Sequence in context: A105231 A009398 A009698 * A012624 A335829 A061307

Adjacent sequences: A012721 A012722 A012723 * A012725 A012726 A012727

KEYWORD

nonn

AUTHOR

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

STATUS

approved