A009259 Expansion of exp(tanh(sinh(x))).

1, 1, 1, 0, -3, -12, -27, 80, 1081, 4368, -3831, -194048, -1567563, -3700928, 73024877, 1030112512, 4980721009, -37188370176, -1015258860783, -9180483559424, 13245921859181, 1551617290925056, 20750351796802549, 57029184668422144

Offset

0,5

Links

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

Mathematica

Exp[ Tanh[ Sinh[ x ] ] ]

Crossrefs

Sequence in context: A294416 A187273 A361847 * A183503 A216713 A133647

Adjacent sequences: A009256 A009257 A009258 * A009260 A009261 A009262

Keyword

sign,easy

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved