A012469 Expansion of e.g.f. arctan(cos(x) * log(x+1)).

0, 1, -1, -3, 12, 23, -495, 931, 27552, -214699, -1991565, 44340769, 25066668, -9372982933, 70732779845, 2089607037415, -43990273165920, -339320074587383, 22626180254319399, -95718973807370395

Offset

0,4

Links

Table of n, a(n) for n=0..19.

Example

x - 1/2!*x^2 - 3/3!*x^3 + 12/4!*x^4 + 23/5!*x^5 ...

Crossrefs

Sequence in context: A332349 A354529 A242636 * A103449 A030571 A297675

Adjacent sequences: A012466 A012467 A012468 * A012470 A012471 A012472

Keyword

sign

Author

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

Extensions

a(0) inserted and title improved by Sean A. Irvine, Jul 19 2018

Status

approved