A012319 Expansion of e.g.f. arctan(arcsin(x) * exp(x)).

0, 1, 2, 2, -16, -152, -640, 3208, 93760, 903232, -434432, -177422848, -3216258560, -16228512640, 694840763136, 22720594160384, 271707063115776, -4070997323902976, -272647179903516672

Offset

0,3

Links

Table of n, a(n) for n=0..18.

Example

x + 2/2!*x^2 + 2/3!*x^3 - 16/4!*x^4 - 152/5!*x^5 ...

Crossrefs

Sequence in context: A230990 A217977 A368467 * A012520 A012323 A009804

Adjacent sequences: A012316 A012317 A012318 * A012320 A012321 A012322

Keyword

sign

Author

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

Extensions

a(0) inserted and title improved by Sean A. Irvine, Jul 17 2018

Status

approved