A009803 Expansion of tanh(sinh(x))*exp(x).

0, 1, 2, 2, 0, -8, -32, 16, 640, 2304, 1024, -68352, -661504, -843776, 25305088, 221382656, 948699136, -9865887744, -216606572544, -888186732544, 10006005547008, 200433787207680, 2013855760777216, -8060855544971264

Offset

0,3

Links

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

Mathematica

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

Crossrefs

Sequence in context: A248948 A364288 A009187 * A009615 A184011 A079194

Adjacent sequences: A009800 A009801 A009802 * A009804 A009805 A009806

Keyword

sign,easy

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved