A024269 Expansion of tan(x)*sin(tan(x))/2.

0, 1, 6, 59, 268, -58123, -8182126, -1063116241, -153085326824, -25192786614807, -4733251241428194, -1002760023439122397, -234743067240981946588, -58793979433427774979363, -14793571004015066901139030

Offset

0,3

Links

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

Mathematica

Tan[ x ]*Sin[ Tan[ x ]]/2 (* Even Part *)

Crossrefs

Cf. A009742.

Sequence in context: A274985 A034982 A156147 * A224757 A354864 A114501

Adjacent sequences: A024266 A024267 A024268 * A024270 A024271 A024272

Keyword

sign

Author

R. H. Hardin

Extensions

Extended with signs Mar 1997

Status

approved