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 A157197 #6 Mar 31 2012 13:20:40 %S A157197 3,6,85,20877,52086501,10988577 %N A157197 Numbers k such that p(k) + p(k+1) + p(k+2) = A122706(n)^n, where p(k) is a k-th prime. %e A157197 a(1) = 3 because p(3) + p(4) + p(5) = 5 + 7 + 11 = 23 = A122706(1)^1. %e A157197 a(2) = 6 because p(6) + p(7) + p(8) = 13 + 17 + 19 = 49 = 7^2 = A122706(2)^2. %Y A157197 Cf. A122706 %K A157197 more,nonn %O A157197 1,1 %A A157197 _Alexander Adamchuk_, Feb 24 2009 %E A157197 a(5)-a(6) from _Max Alekseyev_, Dec 13 2011