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 A188586 #15 Mar 30 2012 18:52:59 %S A188586 4,6,10,14,34,26,107,50,74,98,317,122,5443,386,290,242,1577,362,2837, %T A188586 482,1154,6146,3467,722,2594,11027,1802,1922,14177,1442,10397,1682, %U A188586 18434,358406,10370,2522,445541,288293,31187,3362,127577,5762,145603,30722,7202 %N A188586 a(n) is the smallest m for which A188550(m)=n, or a(n)=0 if no such m exists. %C A188586 Question: For which primes p exist terms in the sequence of the form 2*p^2? The sequence of these primes starts with 5, 7, 11, 19, 31, 29, 41, ... %Y A188586 Cf. A188550, A188579. %K A188586 nonn %O A188586 1,1 %A A188586 _Vladimir Shevelev_, Apr 04 2011 %E A188586 More terms from _Alois P. Heinz_, Apr 04 2011