A012358 Expansion of e.g.f. arctanh(tan(x) * log(x+1)).

0, 0, 2, -3, 16, -50, 560, -4116, 49376, -495648, 6885568, -93060880, 1541938880, -25786609056, 491456933760, -9706007213280, 211232587063296, -4810337505293312, 118025076480927744, -3034967141004516864, 82967370464849969152, -2375277511119683573760

Offset

0,3

Links

Table of n, a(n) for n=0..21.

Example

2/2!*x^2 - 3/3!*x^3 + 16/4!*x^4 - 50/5!*x^5 ...

Crossrefs

Sequence in context: A012703 A012699 A012354 * A012700 A012705 A103331

Adjacent sequences: A012355 A012356 A012357 * A012359 A012360 A012361

Keyword

sign

Author

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

Extensions

a(0) and a(1) inserted and title improved by Sean A. Irvine, Jul 18 2018

Status

approved