OFFSET
0,3
COMMENTS
"Bernoulli numbers" for x/[1-tan(x)].
FORMULA
a(n) ~ n! * 2^(2*n-1)/Pi^n. - Vaclav Kotesovec, Jun 26 2013
MAPLE
G:=x/(1-tan(x)): Gser:=series(G, x=0, 25): 0, seq(n!*coeff(Gser, x^n), n=1..22);
MATHEMATICA
g[x_] = x/(-1 + Tan[x]) h[x_, n_] = Dt[g[x], {x, n}] a[x_] = Table[ -h[x, n], {n, 0, 50}]; b = a[0]
CROSSREFS
KEYWORD
nonn
AUTHOR
Roger L. Bagula, Jun 27 2005
STATUS
approved