A009352 - OEIS

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A009352

E.g.f: log(1+sinh(x))*cosh(x).

0, 1, -1, 6, -16, 80, -421, 2800, -21736, 194304, -1961521, 22060544, -273408136, 3701321728, -54335326501, 859630860288, -14579917279216, 263892101169152, -5076781293615361, 103444435675512832, -2225448965436594976

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

OFFSET

0,4

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..200

FORMULA

a(n) ~ (n-1)! * (-1)^(n+1) * sqrt(2) / (log(1+sqrt(2)))^n. - Vaclav Kotesovec, Jan 23 2015

MATHEMATICA

With[{nn=30}, CoefficientList[Series[Log[1+Sinh[x]]Cosh[x], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jun 04 2013 *)

CROSSREFS

Sequence in context: A211954 A230942 A188570 * A056204 A091148 A210370

Adjacent sequences: A009349 A009350 A009351 * A009353 A009354 A009355