OFFSET
0,3
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 173
FORMULA
a(n) ~ (n-1)! * (-1)^(n+1) / r^n, where r = 0.46605913165918886499866250745716312978322387778... is the root of the equation exp(exp(-r))*(1-r) = 1. - Vaclav Kotesovec, Jan 24 2015
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Log[1+Log[1+x]/Exp[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jun 22 2013 *)
CROSSREFS
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Previous Mathematica program replaced and Definition clarified by Harvey P. Dale, Jun 22 2013
STATUS
approved