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A009508 Expansion of sin(tan(x))*x. 1
0, 2, 4, -18, -2200, -150150, -11618004, -1078005082, -118928710576, -15184771406478, -2148536703814700, -309605570133329954, -34193099991177752904, 4268254817856544829418, 6637048590856623019431932 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

MATHEMATICA

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

CROSSREFS

Sequence in context: A323702 A318531 A009667 * A275000 A290595 A009418

Adjacent sequences:  A009505 A009506 A009507 * A009509 A009510 A009511

KEYWORD

sign

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

STATUS

approved

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Last modified October 24 18:08 EDT 2021. Contains 348233 sequences. (Running on oeis4.)