A012949 Expansion of e.g.f. sin(tan(x)+arcsin(x)) (odd powers only).

2, -5, -63, -1311, -40503, -1746571, -107820971, -11358568591, -2325027955727, -758733754118995, -316897192245332147, -156022193472911939575, -88731619980459755789207, -57999122346814550350950715, -43438452283970426388864863611

Offset

0,1

Links

Harvey P. Dale, Table of n, a(n) for n = 0..100

Example

2*x-5/3!*x^3-63/5!*x^5-1311/7!*x^7-40503/9!*x^9...

Mathematica

With[{nn=30}, Take[CoefficientList[Series[Sin[Tan[x]+ArcSin[x]], {x, 0, nn}], x]Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, May 13 2012 *)

Crossrefs

Sequence in context: A217053 A134590 A012978 * A027667 A076630 A270389

Adjacent sequences: A012946 A012947 A012948 * A012950 A012951 A012952

Keyword

sign

Author

Patrick Demichel

Extensions

Definition clarified by Harvey P. Dale, May 13 2012

Status

approved