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A024244 Expansion of tan(sin(x)*x)/2. 0
0, 1, -2, 123, -3364, 307445, -27693606, 4225124911, -763609828808, 186062503278825, -54699231827563210, 19846874921743244771, -8537442340155261028332, 4342042121637684282920413 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..13.

MATHEMATICA

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

CROSSREFS

Cf. A009673.

Sequence in context: A249503 A249504 A230586 * A088055 A065705 A012870

Adjacent sequences:  A024241 A024242 A024243 * A024245 A024246 A024247

KEYWORD

sign

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs Mar 1997

STATUS

approved

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Last modified June 25 17:47 EDT 2019. Contains 324353 sequences. (Running on oeis4.)