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
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Definition clarified and Mathematica program replaced by Harvey P. Dale, Jun 04 2013
STATUS
approved