A012937 Expansion of e.g.f. sin(tan(x)+sin(x)) (odd powers only).

2, -7, 9, -865, -12375, -848621, -34580971, -1631142593, 100600927153, 62231815768555, 20774283625070381, 6639875773736986167, 2242689817858462241481, 821491704576305014178467, 328684614938160876954025861, 143534888422953578956304571183

Offset

0,1

Links

Table of n, a(n) for n=0..15.

Example

2*x-7/3!*x^3+9/5!*x^5-865/7!*x^7-12375/9!*x^9...

Mathematica

With[{nn=40}, Take[CoefficientList[Series[Sin[Tan[x]+Sin[x]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Sep 04 2011 *)

Crossrefs

Sequence in context: A362858 A041453 A042157 * A022414 A319932 A236243

Adjacent sequences: A012934 A012935 A012936 * A012938 A012939 A012940

Keyword

sign

Author

Patrick Demichel

Extensions

More terms from Harvey P. Dale, Aug 04 2011

Status

approved