OFFSET
0,1
REFERENCES
F. Hirzebruch, Topological Methods in Algebraic Geometry, Springer, 3rd. ed., 1966; p. 12, Eq. 11.
FORMULA
a(n) = denominator(Zeta(2*n)*(4^n-2)/Pi^(2*n)). - Peter Luschny, Aug 11 2014
EXAMPLE
1/2, 1/3, 7/45, 62/945, 127/4725, 146/13365, 2828954/638512875, 32764/18243225, 16931177/23260111875, 11499383114/38979295480125, ...
MAPLE
A171079 := n -> denom(Zeta(2*n)*(4^n-2)/Pi^(2*n));
seq(A171079(n), n=0..17); # Peter Luschny, Aug 11 2014
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
N. J. A. Sloane, Sep 06 2010
EXTENSIONS
a(0) changed in accordance with the zeta based formula. Peter Luschny, Aug 18 2014
STATUS
approved