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A013328 Expansion of e.g.f. sin(exp(x)-sec(x)). 0
0, 1, 0, 0, -4, -8, 0, -56, 1136, -4976, 47040, -541728, 2460416, -51170624, 202185984, -5359238912, 20705351936, -673408564736, 2215089472512, -100278515381760, 202372883465216, -17008883052323840 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..21.

EXAMPLE

x-4/4!*x^4-8/5!*x^5-56/7!*x^7+1136/8!*x^8...

MATHEMATICA

With[{nn=30}, CoefficientList[Series[Sin[Exp[x]-Sec[x]], {x, 0, nn}], x]Range[0, nn]!] (* Harvey P. Dale, Jan 22 2013 *)

PROG

(PARI) x = 'x + O('x^30); concat(0, Vec(serlaplace(sin(exp(x)-1/cos(x))))) \\ Michel Marcus, Aug 06 2018

CROSSREFS

Sequence in context: A104538 A120580 A205508 * A143462 A190966 A042972

Adjacent sequences:  A013325 A013326 A013327 * A013329 A013330 A013331

KEYWORD

sign

AUTHOR

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

EXTENSIONS

Definition clarified by Harvey P. Dale, Jan 22 2013

a(0)=0 inserted by Sean A. Irvine, Aug 05 2018

STATUS

approved

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Last modified April 11 18:59 EDT 2021. Contains 342888 sequences. (Running on oeis4.)