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A009790 Expansion of tanh(sin(log(1+x))). 0
0, 1, -1, -1, 12, -44, 0, 1308, -9744, 10252, 627300, -8602012, 52192272, 175312944, -7344669696, 47605119248, 1147983841920, -39804749006384, 654853807745712, -6275619074963280, 23531625959609280, -369751741237644224 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..21.

MATHEMATICA

Tanh[ Sin[ Log[ 1+x ] ] ]

CROSSREFS

Sequence in context: A136279 A012471 A116187 * A009519 A106808 A296181

Adjacent sequences:  A009787 A009788 A009789 * A009791 A009792 A009793

KEYWORD

sign,easy

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

STATUS

approved

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Last modified November 26 15:34 EST 2020. Contains 338640 sequences. (Running on oeis4.)