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A012488 tanh(cos(x)*arcsin(x))=x-4/3!*x^3+60/5!*x^5-2056/7!*x^7+127376/9!*x^9... 0
1, -4, 60, -2056, 127376, -11253504, 1524986944, -257629834112, 60842617280768, -16737691854400512, 6112605714322803712, -2481449664133693548544, 1299422306103439813611520 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

MATHEMATICA

With[{nn=30}, Take[CoefficientList[Series[Tanh[Cos[x]ArcSin[x]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Jun 20 2020 *)

CROSSREFS

Sequence in context: A303286 A322450 A099705 * A181444 A177780 A012567

Adjacent sequences:  A012485 A012486 A012487 * A012489 A012490 A012491

KEYWORD

sign

AUTHOR

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

STATUS

approved

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Last modified July 12 09:23 EDT 2020. Contains 335657 sequences. (Running on oeis4.)