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A088182 E.g.f.: 1/(1-sinh(x)-x-x^2/2). 0
2, 9, 61, 550, 6201, 83894, 1324177, 23886552, 484745029, 10930266652, 271107065043, 7335664739264, 215030576905171, 6788059632853620, 229590704738375917, 8283076586956304128, 317510426598228001881 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..17.

FORMULA

a(n) ~ n!/((cosh(r)+1+r)*r^(n+1)), where r = 0.4434887492889753... is the root of the equation r*(2+r)+2*sinh(r)=2. - Vaclav Kotesovec, Jun 27 2013

MATHEMATICA

With[{nn=20}, Rest[CoefficientList[Series[1/(1-Sinh[x]-x-x^2/2), {x, 0, nn}], x]Range[0, nn]!]] (* Harvey P. Dale, May 21 2012 *)

CROSSREFS

Cf. A006154, A088181.

Sequence in context: A053983 A192939 A107883 * A006155 A121870 A268450

Adjacent sequences:  A088179 A088180 A088181 * A088183 A088184 A088185

KEYWORD

nonn

AUTHOR

Karol A. Penson, Sep 22 2003

STATUS

approved

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Last modified January 20 02:29 EST 2018. Contains 297938 sequences.