A009523 Expansion of sin(tanh(x))*cos(x).

1, -6, 72, -1848, 81088, -5318016, 483162240, -57865303296, 8815813734400, -1662921003208704, 380141599264751616, -103492751953073897472, 33072262407957372633088, -12253967233389523820544000

Offset

0,2

Links

Table of n, a(n) for n=0..13.

Mathematica

Sin[ Tanh[ x ]]*Cos[ x ] (* Odd Part *)

Crossrefs

Sequence in context: A138446 A099029 A120331 * A009793 A259212 A279234

Adjacent sequences: A009520 A009521 A009522 * A009524 A009525 A009526

Keyword

sign

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved