OFFSET
1,3
MAPLE
MATHEMATICA
a[n_] := Numerator[ Denominator[ BernoulliB[2*n, 1/2]]/(3*5*2^(2*n))]; Array[a, 57] (* Jean-François Alcover, Apr 17 2013, after Paul Curtz *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul Curtz, Oct 01 2009
EXTENSIONS
Extended by R. J. Mathar, Oct 05 2009
STATUS
approved