A009503 Expansion of sin(tan(tanh(x))).

1, -1, -7, 279, -5167, -150833, 27945609, -1993449433, -9028140255, 31838140005407, -6048738288194407, 355913167525925303, 184225833048174255601, -80356934978109379169297, 12759566239212806636543529

Offset

0,3

Links

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

Mathematica

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

Crossrefs

Sequence in context: A289634 A065581 A062646 * A209889 A176072 A096548

Adjacent sequences: A009500 A009501 A009502 * A009504 A009505 A009506

Keyword

sign

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved