A009835 Expansion of tanh(x)*tan(sin(x)).

0, 2, -4, 38, -1800, 49354, -2224652, 213407470, -19515213328, 2214421360530, -370704748056596, 69183566673997750, -14893989315954214168, 4017468897454451692634, -1237828661076392935858716

Offset

0,2

Links

Table of n, a(n) for n=0..14.

Mathematica

Tanh[ x ]*Tan[ Sin[ x ] ] (* Even Part *)

Crossrefs

Sequence in context: A012433 A012438 A009626 * A362411 A009834 A106127

Adjacent sequences: A009832 A009833 A009834 * A009836 A009837 A009838

Keyword

sign

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved