A024304 Expansion of tan(x)*sin(sin(x))/2.

0, 1, 0, 44, 352, 25232, 1044608, 86611520, 8060400640, 1016049182976, 155613732065280, 29190135887043584, 6526669398291292160, 1719640681837101944832, 526864606689799747764224

Offset

0,4

Links

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

Mathematica

With[{nn=30}, Take[CoefficientList[Series[Tan[x]*Sin[Sin[x]]/2, {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Apr 01 2024 *)

Crossrefs

A009740.

Sequence in context: A199828 A183633 A200450 * A190420 A228464 A190605

Adjacent sequences: A024301 A024302 A024303 * A024305 A024306 A024307

Keyword

nonn

Author

R. H. Hardin

Extensions

Extended and signs tested 03/97.

Previous Mathematica program replaced by Harvey P. Dale, Apr 01 2024

Status

approved