A009330 Expansion of log(1+sin(tanh(x))).

0, 1, -1, -1, 6, 1, -72, 55, 1456, -2207, -47104, 79727, 2390784, -2834207, -180612096, 81045991, 18625189888, 1107720001, -2431403622400, -715785186337, 384624656646144, 165075476417857, -72343735465672704, -44818254949260905

Offset

0,5

Links

Table of n, a(n) for n=0..23.

Mathematica

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

Crossrefs

Sequence in context: A009384 A280520 A051151 * A300512 A343622 A318107

Adjacent sequences: A009327 A009328 A009329 * A009331 A009332 A009333

Keyword

sign,easy

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved