A009804 Expansion of tanh(sinh(x)*exp(x)).

0, 1, 2, 2, -16, -168, -928, -880, 57472, 897792, 7304192, -4100864, -1356949504, -27044864000, -271226560512, 1097459304448, 114089524002816, 2671773715300352, 29775666324832256, -316640482329755648

Offset

0,3

Links

Table of n, a(n) for n=0..19.

Mathematica

Tanh[ Sinh[ x ]*Exp[ x ] ]

Crossrefs

Sequence in context: A012319 A012520 A012323 * A027607 A100680 A002567

Adjacent sequences: A009801 A009802 A009803 * A009805 A009806 A009807

Keyword

sign,easy

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved