OFFSET
0,4
LINKS
Harvey P. Dale, Table of n, a(n) for n = 0..500
FORMULA
a(n) ~ (n-1)! * (-1)^(n+1) * (2/log(2+sqrt(5)))^n. - Vaclav Kotesovec, Jan 23 2015
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Log[1+Sinh[x]* Cosh[x]], {x, 0, nn}], x]Range[0, nn]!] (* Harvey P. Dale, Sep 30 2011 *)
CROSSREFS
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
STATUS
approved