BBC Russian

A013468

Expansion of e.g.f.: exp(cos(x)-exp(x))=1-x-1/2!*x^2+4/3!*x^3+5/4!*x^4-32/5!*x^5...

1, -1, -1, 4, 5, -32, -55, 390, 961, -6432, -22463, 134550, 649761, -3443208, -22456551, 105379838, 911433121, -3787776224, -42942180863, 157078439014, 2324211078513, -7384507525560, -143088139308519

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

OFFSET

0,4

LINKS

Table of n, a(n) for n=0..22.

MATHEMATICA

With[{nn=30}, CoefficientList[Series[Exp[Cos[x]-Exp[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Mar 11 2019 *)

CROSSREFS

Sequence in context: A373190 A262711 A215614 * A244333 A041907 A228662

Adjacent sequences: A013465 A013466 A013467 * A013469 A013470 A013471

KEYWORD

sign

AUTHOR

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

EXTENSIONS

Definition clarified by Harvey P. Dale, Mar 11 2019

STATUS

approved