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A024302 Expansion of sin(sinh(x))*x/2. 0
0, 1, 0, -24, -224, 320, 76032, 2165632, 23343104, -1474043904, -127160524800, -5452094095360, -48051108446208, 17669269569961984, 2144050100688125952, 144303119119098839040, 2287457902532063395840 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..16.

MATHEMATICA

With[{nn=40}, Take[CoefficientList[Series[Sin[Sinh[x]] x/2, {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Sep 06 2019 *)

CROSSREFS

Cf. A009493.

Sequence in context: A202073 A107968 A269777 * A181710 A201192 A345648

Adjacent sequences:  A024299 A024300 A024301 * A024303 A024304 A024305

KEYWORD

sign

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs Mar 1997

Previous Mathematica program replaced by Harvey P. Dale, Sep 06 2019

STATUS

approved

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Last modified January 19 06:18 EST 2022. Contains 350464 sequences. (Running on oeis4.)