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 A190584 #8 Sep 18 2022 11:38:54 %S A190584 4,27,119,497,2023,8149,32692,130938,524050,2096730,8387859,33553102, %T A190584 134215364,536866711,2147476180,8589921317,34359714770,137438911520, %U A190584 549755739309,2199023122967,8796092786503,35184371669802,140737487610388,562949952096975 %N A190584 Bisection of A013697. %F A190584 a(n) = floor(1/(zeta(2n+1)-1)). %K A190584 nonn %O A190584 1,1 %A A190584 _N. J. A. Sloane_, May 13 2011