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A009671 Expansion of e.g.f. tan(sin(x)*cosh(x)), odd powers only. 2
1, 4, 52, 1776, 95184, 8098880, 965358656, 155373092608, 32381834795264, 8483377324590080, 2729934728621511680, 1058257916995852103680, 486461302251310562234368, 261629260950851535726460928, 162758580940261631762847645696 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..100

MATHEMATICA

With[{nn=30}, Take[CoefficientList[Series[Tan[Sin[x]*Cosh[x]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Jul 05 2013 *)

CROSSREFS

Sequence in context: A343429 A277353 A055974 * A015001 A355612 A317829

Adjacent sequences: A009668 A009669 A009670 * A009672 A009673 A009674

KEYWORD

nonn

AUTHOR

R. H. Hardin

EXTENSIONS

Extended and signs tested by Olivier Gérard, Mar 15 1997

Prior Mathematica program replaced by Harvey P. Dale, Jul 05 2013

Clarified definition by Joerg Arndt, Feb 09 2014

a(14) from Vincenzo Librandi, Feb 09 2014

STATUS

approved

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Last modified January 27 21:35 EST 2023. Contains 359849 sequences. (Running on oeis4.)