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A012421 sin(arctan(x)*sin(x))=2/2!*x^2-12/4!*x^4+70/6!*x^6+2856/8!*x^8... 0
2, -12, 70, 2856, -406262, 53106460, -8809933106, 1910193704272, -531575014780398, 185190064964692804, -78983931548861495466, 40480351020220065079928, -24547642682771502545050854 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..12.

CROSSREFS

Sequence in context: A001251 A143357 A012426 * A012381 A012376 A223763

Adjacent sequences:  A012418 A012419 A012420 * A012422 A012423 A012424

KEYWORD

sign

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

STATUS

approved

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Last modified March 28 15:50 EDT 2020. Contains 333089 sequences. (Running on oeis4.)