A009587 - OEIS

A009587

Expansion of e.g.f. sinh(sin(sin(x))).

1, -1, -7, 335, -12367, 461119, -15282199, -15084017, 113205762401, -23353924295169, 3999727786726617, -646193037236457649, 96494362194199966481, -10906894032368131721153, -479911420793798434667319, 1063072317688793395093573391

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OFFSET

0,3

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..250

MATHEMATICA

With[{nn=30}, Take[CoefficientList[Series[Sinh[Sin[Sin[x]]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Oct 03 2011 *)

PROG

(PARI) x='x+O('x^30); Vec(serlaplace(sinh(sin(sin(x))))) \\ G. C. Greubel, Jan 22 2018

CROSSREFS

Sequence in context: A177019 A160432 A324233 * A281619 A054325 A161582

Adjacent sequences: A009584 A009585 A009586 * A009588 A009589 A009590

KEYWORD

sign

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

a(15) from G. C. Greubel, Jan 22 2018

STATUS

approved