A009625 Expansion of sinh(x)*exp(tanh(x)).

0, 1, 2, 4, 0, -24, -32, 456, 1984, -11264, -118016, 289664, 8529920, 3000960, -754714880, -2697206272, 79868821504, 625547980800, -9749056634880, -138214081974272, 1296267479826432, 32824743592198144

Offset

0,3

Links

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

Mathematica

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

Crossrefs

Sequence in context: A205975 A231915 A009170 * A308024 A347281 A055871

Adjacent sequences: A009622 A009623 A009624 * A009626 A009627 A009628

Keyword

sign,easy

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved