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A013124 Expansion of e.g.f. arcsinh(tanh(x) + log(x+1)). 0
0, 2, -1, -8, 18, 298, -1905, -25412, 350700, 4095754, -108856125, -940845072, 49635561030, 233977315570, -31129149144093, 12883816215268, 25437319822551000, -179134252641817006, -25989451309294893657 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

EXAMPLE

2*x - 1/2!*x^2 - 8/3!*x^3 + 18/4!*x^4 + 298/5!*x^5 ...

CROSSREFS

Sequence in context: A235048 A013118 A012961 * A012966 A168244 A009828

Adjacent sequences:  A013121 A013122 A013123 * A013125 A013126 A013127

KEYWORD

sign

AUTHOR

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

EXTENSIONS

a(0)=0 inserted and title improved by Sean A. Irvine, Jul 31 2018

STATUS

approved

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Last modified September 29 18:39 EDT 2022. Contains 357090 sequences. (Running on oeis4.)