A009202 - OEIS

A009202

Expansion of e.g.f.: exp(sin(sinh(x))).

1, 1, 1, 1, 1, -7, -47, -223, -895, -2959, -31, 82721, 1002497, 8156073, 53580465, 239061825, -8587007, -19348243487, -305732208959, -3454706477375, -30437638147583, -182295608480935, 144862063593105, 26905043182243041

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

OFFSET

0,6

LINKS

Table of n, a(n) for n=0..23.

MATHEMATICA

With[{nn=30}, CoefficientList[Series[Exp[Sin[Sinh[x]]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jul 30 2025 *)

CROSSREFS

Sequence in context: A336789 A201437 A202509 * A093112 A381698 A091516

Adjacent sequences: A009199 A009200 A009201 * A009203 A009204 A009205

KEYWORD

sign,easy

AUTHOR

R. H. Hardin

EXTENSIONS

Extended with signs by Olivier Gérard, Mar 15 1997

Definition clarified and previous Mathematica program replaced by Harvey P. Dale, Jul 30 2025

STATUS

approved