A012566 - OEIS

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A012566

arcsin(sinh(x)*cos(x))=x-1/3!*x^3-15/5!*x^5-201/7!*x^7+1025/9!*x^9...

1, -1, -15, -201, 1025, 505199, 45962865, 672778599, -885967354495, -245542561428001, -22172563647911055, 14487811265589717399, 9628380148436165613185, 2365618724494349248126799

(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[ArcSin[Sinh[x]*Cos[x]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Dec 25 2016 *)

CROSSREFS

Sequence in context: A002007 A207835 A178507 * A238992 A216465 A215903

Adjacent sequences: A012563 A012564 A012565 * A012567 A012568 A012569

KEYWORD

sign

AUTHOR

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

STATUS

approved