A013129 Expansion of e.g.f.: exp(tanh(x)+sin(x))=1+2*x+4/2!*x^2+5/3!*x^3-8/4!*x^4-71/5!*x^5...

1, 2, 4, 5, -8, -71, -122, 863, 5352, -11207, -239494, -103541, 14203028, 49174077, -1067540778, -8312033249, 94081990576, 1398228044113, -8737926966734, -258914411211565, 612930093492268, 53899233359866405

Offset

0,2

Links

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

Mathematica

With[{nn=30}, CoefficientList[Series[Exp[Tanh[x]+Sin[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jun 22 2022 *)

Crossrefs

Sequence in context: A013103 A012973 A013154 * A104311 A200818 A021980

Adjacent sequences: A013126 A013127 A013128 * A013130 A013131 A013132

Keyword

sign

Author

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

Extensions

Definition clarified by Harvey P. Dale, Jun 22 2022

Status

approved