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A009506 Expansion of sin(tan(x))*cosh(x). 0
1, 4, 12, -296, -25200, -1885952, -163728576, -16916558720, -2050105730816, -282656394482688, -42100913802486784, -6025333851231979520, -461235714949468024832, 265243699159867430764544 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

MATHEMATICA

Sin[ Tan[ x ] ]*Cosh[ x ] (* Odd Part *)

CROSSREFS

Sequence in context: A131491 A286881 A291098 * A299808 A085116 A104129

Adjacent sequences:  A009503 A009504 A009505 * A009507 A009508 A009509

KEYWORD

sign

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

STATUS

approved

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Last modified October 27 12:59 EDT 2021. Contains 348276 sequences. (Running on oeis4.)