A009728 Expansion of tan(x)*cos(sinh(x)).

1, -1, -19, -253, -5447, -225721, -14615899, -1266041845, -140130487823, -19419956236657, -3304321034706211, -677542297845085165, -164755897732586842199, -46874838119958767992105

Offset

0,3

Links

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

Mathematica

Tan[ x ]*Cos[ Sinh[ x ] ] (* Odd Part *)

Crossrefs

Sequence in context: A017952 A055433 A185425 * A027532 A021394 A016316

Adjacent sequences: A009725 A009726 A009727 * A009729 A009730 A009731

Keyword

sign

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved