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A009728 Expansion of tan(x)*cos(sinh(x)). 0
1, -1, -19, -253, -5447, -225721, -14615899, -1266041845, -140130487823, -19419956236657, -3304321034706211, -677542297845085165, -164755897732586842199, -46874838119958767992105 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

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

MATHEMATICA

Tan[ x ]*Cos[ Sinh[ x ] ] (* Odd Part *)

CROSSREFS

Sequence in context: A017952 A055433 A185425 * A027532 A021394 A016316

Adjacent sequences:  A009725 A009726 A009727 * A009729 A009730 A009731

KEYWORD

sign

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

STATUS

approved

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Last modified February 19 14:31 EST 2018. Contains 299334 sequences. (Running on oeis4.)