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A012934

Expansion of e.g.f.: sec(tan(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+115/4!*x^4-500/5!*x^5...

1, 0, 4, -6, 115, -500, 8734, -70602, 1289945, -15743304, 315266344, -5159155430, 115185531211, -2350119405036, 58713986375802, -1425578090696970, 39746678648110001, -1113352395040853712

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,3

LINKS

Table of n, a(n) for n=0..17.

MATHEMATICA

With[{nn=20}, CoefficientList[Series[Sec[Tan[x]+Log[x+1]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Dec 07 2013 *)

CROSSREFS

Sequence in context: A012909 A219507 A367878 * A013165 A391734 A337466

Adjacent sequences: A012931 A012932 A012933 * A012935 A012936 A012937

KEYWORD

sign

AUTHOR

Patrick Demichel

EXTENSIONS

Definition clarified by Harvey P. Dale, Dec 07 2013

STATUS

approved

URL: https://oeis.org/A012934

⇱ A012934 - OEIS