A012421 sin(arctan(x)*sin(x))=2/2!*x^2-12/4!*x^4+70/6!*x^6+2856/8!*x^8...

2, -12, 70, 2856, -406262, 53106460, -8809933106, 1910193704272, -531575014780398, 185190064964692804, -78983931548861495466, 40480351020220065079928, -24547642682771502545050854

Offset

0,1

Links

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

Crossrefs

Sequence in context: A143357 A357831 A012426 * A012381 A012376 A223763

Adjacent sequences: A012418 A012419 A012420 * A012422 A012423 A012424

Keyword

sign

Author

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

Status

approved