A009502 Expansion of sin(tan(tan(x))).

1, 3, 33, 403, -41247, -12404989, -3175861439, -925805229229, -320290449542079, -131747901365358205, -63921607627858687775, -36198590593345414392685, -23669080385211533481142239, -17684215690454157561823950973

Offset

0,2

Links

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

Mathematica

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

Crossrefs

Sequence in context: A155660 A299507 A294167 * A222941 A321265 A011922

Adjacent sequences: A009499 A009500 A009501 * A009503 A009504 A009505

Keyword

sign

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved