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A009835 Expansion of tanh(x)*tan(sin(x)). 1
0, 2, -4, 38, -1800, 49354, -2224652, 213407470, -19515213328, 2214421360530, -370704748056596, 69183566673997750, -14893989315954214168, 4017468897454451692634, -1237828661076392935858716 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..14.

MATHEMATICA

Tanh[ x ]*Tan[ Sin[ x ] ] (* Even Part *)

CROSSREFS

Sequence in context: A012433 A012438 A009626 * A009834 A106127 A018992

Adjacent sequences:  A009832 A009833 A009834 * A009836 A009837 A009838

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 23 17:37 EDT 2021. Contains 348215 sequences. (Running on oeis4.)