OFFSET
0,3
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..175
FORMULA
a(n) = sum(k=1..n, (2*k)!*stirling1(n,2*k)/k*(-1)^k). - Vladimir Kruchinin, Sep 28 2012
a(n) ~ -2*cos(n*(1+Pi)/2) * (n-1)! / (2-2*cos(1))^(n/2). - Vaclav Kotesovec, Sep 05 2014
MATHEMATICA
With[{nn=30}, CoefficientList[Series[Log[1+Log[1+x]^2], {x, 0, nn}], x]Range[0, nn]!] (* Harvey P. Dale, Mar 06 2013 *)
CROSSREFS
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Definition clarified by Harvey P. Dale, Mar 06 2013
STATUS
approved