A088189 E.g.f. : 1/(1-sinh(x)-x-x^2).

2, 10, 73, 712, 8681, 127004, 2167789, 42287088, 928006801, 22628305012, 606939739253, 17759375280200, 562952693773081, 19217673118604172, 702899000556953437, 27422924828816762848, 1136746326170994466337

Offset

0,1

Links

Table of n, a(n) for n=0..16.

Formula

a(n) ~ n!/((cosh(r)+1+2*r)*r^(n+1)), where r = 0.41010884430143... is the root of the equation r+r^2+sinh(r)=1. - Vaclav Kotesovec, Jun 27 2013

Mathematica

CoefficientList[Series[1/(1-Sinh[x]-x-x^2), {x, 0, 20}], x]* Range[0, 20]! (* Vaclav Kotesovec, Jun 27 2013 *)

Crossrefs

Cf. A006154, A088181.

Sequence in context: A224799 A275550 A243250 * A228609 A001395 A047853

Adjacent sequences: A088186 A088187 A088188 * A088190 A088191 A088192

Keyword

nonn

Author

Karol A. Penson, Sep 22 2003

Status

approved