|
|
A009645
|
|
Expansion of e.g.f.: tan(log(1+x))*log(1+x).
|
|
1
|
|
|
0, 0, 2, -6, 30, -180, 1324, -11424, 113376, -1271232, 15889280, -218989760, 3298513600, -53897151360, 949389619840, -17931842342400, 361486218406400, -7746121344512000, 175813073606092800, -4213227577441536000
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,3
|
|
LINKS
|
|
|
FORMULA
|
a(n) ~ n! * (-1)^n * Pi / (2 * (exp(Pi/2)-1) * (1-exp(-Pi/2))^n). - Vaclav Kotesovec, Jan 23 2015
|
|
MATHEMATICA
|
With[{nn=20}, CoefficientList[Series[Tan[Log[1+x]]*Log[1+x], {x, 0, nn}], x]Range[0, nn]!] (* Harvey P. Dale, Aug 16 2012 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
sign,easy
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|