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A013020 Expansion of e.g.f.: tanh(sinh(x)+log(x+1))=2*x-1/2!*x^2-13/3!*x^3+42/4!*x^4+237/5!*x^5... 0
0, 2, -1, -13, 42, 237, -2490, -3645, 204344, -680163, -20955960, 230307805, 2174078808, -64281321713, -27511603392, 18418436193415, -156659497218720, -5253312957895607, 117706310429535360 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

MATHEMATICA

With[{nn=20}, CoefficientList[Series[Tanh[Sinh[x]+Log[x+1]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Nov 25 2016 *)

CROSSREFS

Sequence in context: A217490 A317384 A247601 * A012906 A013017 A012902

Adjacent sequences: A013017 A013018 A013019 * A013021 A013022 A013023

KEYWORD

sign

AUTHOR

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

EXTENSIONS

Zero prepended and definition clarified by Harvey P. Dale, Nov 25 2016

STATUS

approved

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Last modified November 29 14:48 EST 2022. Contains 358431 sequences. (Running on oeis4.)