A012111 Expansion of e.g.f.: exp(arcsin(arcsinh(x)))=1+x+1/2!*x^2+1/3!*x^3+1/4!*x^4+9/5!*x^5...

1, 1, 1, 1, 1, 9, 49, 113, 1, 6993, 83361, 171777, -2206335, 45264153, 961321425, 412458993, -96313079295, 1241225427105, 41773143339585, -81335384742015, -9493597481579775, 102955176831541545, 4967941000109596785

Offset

0,6

Links

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

Mathematica

With[{nn=30}, CoefficientList[Series[Exp[ArcSin[ArcSinh[x]]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jul 31 2019 *)

Crossrefs

Sequence in context: A087352 A039940 A369963 * A138998 A339125 A016838

Adjacent sequences: A012108 A012109 A012110 * A012112 A012113 A012114

Keyword

sign

Author

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

Extensions

Definition clarified by Harvey P. Dale, Jul 31 2019

Status

approved