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

Offset: 0

Author

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

Keywords

• sign

Programs

Mathematica

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

Extensions

Definition clarified by Harvey P. Dale, Mar 11 2019