OFFSET
0,3
COMMENTS
This sequence starting with the 2nd term, unsigned, is the partial sums of A000667. - Gerald McGarvey, Aug 13 2004
FORMULA
a(n) ~ (n-1)! * (-1)^(n+1) * exp(Pi/2) * 2^(n+1) / Pi^n. - Vaclav Kotesovec, Jan 23 2015
MATHEMATICA
With[{nn=30}, CoefficientList[Series[Log[1+Sin[x]]/Exp[x], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Aug 13 2012 *)
CROSSREFS
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
Definition clarified by Harvey P. Dale, Aug 13 2012
STATUS
approved