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A012933 Expansion of e.g.f.: cosh(tan(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+51/4!*x^4-180/5!*x^5... 0
1, 0, 4, -6, 51, -180, 1614, -9282, 92981, -747432, 8490344, -87525790, 1128907527, -14143194780, 206202445778, -3029299520730, 49575702703017, -833078428220240, 15183028632600076, -286645711942606518 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

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

MATHEMATICA

With[{nn=20}, CoefficientList[Series[Cosh[Tan[x]+Log[x+1]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, May 07 2018 *)

CROSSREFS

Sequence in context: A183369 A241159 A116656 * A013164 A013024 A012910

Adjacent sequences:  A012930 A012931 A012932 * A012934 A012935 A012936

KEYWORD

sign

AUTHOR

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

EXTENSIONS

Definition clarified by Harvey P. Dale, May 07 2018

STATUS

approved

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Last modified June 25 22:53 EDT 2022. Contains 354869 sequences. (Running on oeis4.)