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 A157438 #9 Mar 31 2012 13:20:40 %S A157438 5,127,607 %N A157438 Primes p such that p^2 divides A085606((p-1)/2) = ((p-1)/2-1)^((p-1)/2) - 1. %C A157438 Primes p such that (-3/2)^((p-1)/2) == 1 - p/6 (mod p^2).[Max Alekseyev, Dec 05 2010] %C A157438 Primes p that divide A085606((p-1)/2) are listed in A157437. %C A157438 No other terms below 10^11. [From _Max Alekseyev_, Dec 05 2010.] %Y A157438 Cf. A085606, A157437. %K A157438 hard,more,nonn,bref %O A157438 1,1 %A A157438 _Alexander Adamchuk_, Mar 01 2009