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A009666

Expansion of tan(sin(x))*sinh(x).

0, 2, 8, 8, -960, -24416, 174976, 55072384, 2417174528, -157596298752, -36515570849792, -1639992400689152, 545678443552096256, 129227252689536917504, 760653447239073103872, -6729535404906273785610240, -1588610710637517290637099008

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OFFSET

0,2

LINKS

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

MATHEMATICA

With[{nn=40}, Drop[CoefficientList[Series[Tan[Sin[x]]Sinh[x], {x, 0, nn}], x]Range[0, nn]!, {2, nn, 2}]] (* Harvey P. Dale, Aug 21 2011 *)

CROSSREFS

Sequence in context: A202619 A202379 A009181 * A012346 A012649 A009627

Adjacent sequences: A009663 A009664 A009665 * A009667 A009668 A009669

KEYWORD

sign

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

More terms from Harvey P. Dale, Aug 21 2011

STATUS

approved

URL: https://oeis.org/A009666

⇱ A009666 - OEIS