A013232 Expansion of e.g.f.: sec(log(x+1)-arcsin(x))=1+3/4!*x^4-10/5!*x^5+100/6!*x^6-525/7!*x^7...

1, 0, 0, 0, 3, -10, 100, -525, 5985, -45540, 591750, -5890775, 86674775, -1066113750, 17624076600, -257870101125, 4747675466625, -80439982441000, 1635873200172250, -31462999921825875, 701530665349044375

Offset

0,5

Links

Table of n, a(n) for n=0..20.

Mathematica

With[{nn=20}, CoefficientList[Series[Sec[Log[x+1]-ArcSin[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, May 29 2017 *)

Crossrefs

Sequence in context: A013233 A013226 A013231 * A013269 A013262 A013267

Adjacent sequences: A013229 A013230 A013231 * A013233 A013234 A013235

Keyword

sign

Author

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

Extensions

Definition clarified by Harvey P. Dale, May 29 2017

Status

approved