OFFSET
0,4
LINKS
Vincenzo Librandi and Robert Israel, Table of n, a(n) for n = 0..444 (n = 0 .. 50 from Vincenzo Librandi)
FORMULA
E.g.f.: cos(x)^x.
a(n) ~ n! * (-1)^n * (2/Pi)^(n+Pi/2)*n^(Pi/2-1)/Gamma(Pi/2). - Vaclav Kotesovec, Oct 02 2013
a(n) = (-1)^n * A186247(n). - Robert Israel, Aug 28 2015
MAPLE
a:= n-> n! * coeff(series(cos(x)^x, x, n+1), x, n):
seq(a(n), n=0..20); # Alois P. Heinz, Aug 14 2012
MATHEMATICA
f[x_] := Cos[x]^x; Table[Derivative[n][f][0], {n, 0, 25}]
CROSSREFS
KEYWORD
sign
AUTHOR
Michel Lagneau, Aug 14 2012
EXTENSIONS
Typo in Mathematica code fixed by Vincenzo Librandi, Oct 04 2013
STATUS
approved