A093597 Numerator of Sum_{k in A026424} 1/k^(2n).
1, 1, 4, 59, 521, 872492, 415603, 67323341, 33484369708417, 249063001217323, 402233765088019, 2340564635396243082668, 1836709980831869650909, 7917057291763619291770993, 6790679763108188972468718224386027
Offset: 1
Examples
Pi^2/20, Pi^4/1260, (4*Pi^6)/225225, (59*Pi^8)/137837700, ...
Links
- Eric Weisstein's World of Mathematics, Prime Sums
Formula
1/Pi^(2n) * numerator of (zeta(2n)^2-zeta(4n))/(2zeta(2n)).