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A012788 sinh(sec(x)*arcsin(x))=x+5/3!*x^3+85/5!*x^5+3201/7!*x^7+204905/9!*x^9... 0
1, 5, 85, 3201, 204905, 19581949, 2608398013, 463598293497, 106484041306577, 30821112722260469, 11011429241275209765, 4772177089034491961201, 2471736193532210009786425, 1510365281819897595496029677 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

MATHEMATICA

With[{nn=30}, Take[CoefficientList[Series[Sinh[Sec[x]*ArcSin[x]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Jun 07 2013 *)

CROSSREFS

Sequence in context: A203800 A277354 A101928 * A208886 A192055 A012815

Adjacent sequences:  A012785 A012786 A012787 * A012789 A012790 A012791

KEYWORD

nonn

AUTHOR

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

STATUS

approved

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Last modified June 26 21:14 EDT 2022. Contains 354885 sequences. (Running on oeis4.)