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A024269 Expansion of tan(x)*sin(tan(x))/2. 0
0, 1, 6, 59, 268, -58123, -8182126, -1063116241, -153085326824, -25192786614807, -4733251241428194, -1002760023439122397, -234743067240981946588, -58793979433427774979363, -14793571004015066901139030 (list; graph; refs; listen; history; text; internal format)
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

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Last modified August 18 14:22 EDT 2022. Contains 356215 sequences. (Running on oeis4.)