This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A093597 #6 Feb 16 2025 08:32:53
%S A093597 1,1,4,59,521,872492,415603,67323341,33484369708417,249063001217323,
%T A093597 402233765088019,2340564635396243082668,1836709980831869650909,
%U A093597 7917057291763619291770993,6790679763108188972468718224386027
%N A093597 Numerator of Sum_{k in A026424} 1/k^(2n).
%H A093597 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PrimeSums.html">Prime Sums</a>
%F A093597 1/Pi^(2n) * numerator of (zeta(2n)^2-zeta(4n))/(2zeta(2n)).
%e A093597 Pi^2/20, Pi^4/1260, (4*Pi^6)/225225, (59*Pi^8)/137837700, ...
%Y A093597 Cf. A026424, A093598.
%K A093597 nonn,frac
%O A093597 1,3
%A A093597 _Eric W. Weisstein_, Apr 03 2004