A013062 - OEIS

A013062

sinh(sinh(x)+arctan(x))=2*x+7/3!*x^3+17/5!*x^5+1089/7!*x^7...

2, 7, 17, 1089, -36439, 4128909, -543199915, 101851512369, -24809162213327, 7679423522214741, -2941007926918920787, 1365818062351654896985, -756306211537089880852727, 492352824778983285953918013

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OFFSET

0,1

LINKS

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

MATHEMATICA

With[{nn=30}, Take[CoefficientList[Series[Sinh[Sinh[x]+ArcTan[x]], {x, 0, nn}], x]Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Mar 09 2012 *)

CROSSREFS

Sequence in context: A160617 A279334 A283957 * A013092 A174311 A220396

Adjacent sequences: A013059 A013060 A013061 * A013063 A013064 A013065

KEYWORD

sign

AUTHOR

Patrick Demichel

STATUS

approved