A013229 Expansion of e.g.f. tanh(log(x+1) - arcsin(x)).

0, 0, -1, 1, -6, 15, -90, 285, -1960, 2275, -12600, -877725, 9088200, -206895975, 2291088800, -43975670375, 519884196000, -10108488755625, 124295092272000, -2588043770222625, 31717643136725000

Offset

0,5

Links

Table of n, a(n) for n=0..20.

Example

-1/2!*x^2 + 1/3!*x^3 - 6/4!*x^4 + 15/5!*x^5 ...

Crossrefs

Sequence in context: A260117 A220360 A096565 * A013225 A138547 A262327

Adjacent sequences: A013226 A013227 A013228 * A013230 A013231 A013232

Keyword

sign

Author

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

Extensions

a(0)=a(1)=0 inserted and title improved by Sean A. Irvine, Aug 01 2018

Status

approved