|
|
A009352
|
|
E.g.f: log(1+sinh(x))*cosh(x).
|
|
1
|
|
|
0, 1, -1, 6, -16, 80, -421, 2800, -21736, 194304, -1961521, 22060544, -273408136, 3701321728, -54335326501, 859630860288, -14579917279216, 263892101169152, -5076781293615361, 103444435675512832, -2225448965436594976
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,4
|
|
LINKS
|
|
|
FORMULA
|
a(n) ~ (n-1)! * (-1)^(n+1) * sqrt(2) / (log(1+sqrt(2)))^n. - Vaclav Kotesovec, Jan 23 2015
|
|
MATHEMATICA
|
With[{nn=30}, CoefficientList[Series[Log[1+Sinh[x]]Cosh[x], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jun 04 2013 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
sign,easy
|
|
AUTHOR
|
|
|
EXTENSIONS
|
Definition clarified and Mathematica program replaced by Harvey P. Dale, Jun 04 2013
|
|
STATUS
|
approved
|
|
|
|