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 A213125 #5 Jun 06 2012 18:50:42 %S A213125 981091,2260889,3553271,3918251,6038551,9499279,10310761,12377429, %T A213125 13670719,13783139,14881649,15480529,18114461,18727199,20418341, %U A213125 21793829,24170089,25276649,30814321,36104069,49319579,52650599,63485311,73614031,76141591,77646199,87177089 %N A213125 Primes p such that 2p^2-1, 3p^2-2, 4p^2-3, 5p^2-4 and 6p^2-5 are also prime. %C A213125 Subsequence of A213107: %C A213125 a(1)=981091=A213107(14)=A213079(148)=A213078(970)==A106483(10205)=A000040(77144). %Y A213125 Cf. A000040, A106483, A213078, A213079, A213107. %K A213125 nonn %O A213125 1,1 %A A213125 _Zak Seidov_, Jun 05 2012