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 A258642 #12 Jun 16 2015 13:44:25 %S A258642 3,3,5,5,3,5,7,3,5,5,13,11,3,5,13,17,5,11,19,19,7,13,17,5,3,5,13,19, %T A258642 17,3,5,7,17,31,3,7,13,17,37,23,5,37,11,5,43,37,29,31,7,29,31,17,5,7, %U A258642 13,31,43,11,19,41,3,5,7,13,29,23,47,11,37,59,31,47,7,13,41 %N A258642 Suppose A103739(n) = (p^2 + q^2)/2 with p < q primes. The sequence gives values of p. %e A258642 A103739(1)=17=(3^3+5^2)/2 hence a(1)=3. %e A258642 A103739(2)=29=(3^3+7^2)/2 hence a(2)=3. %Y A258642 Cf. A103739, A258653 (values of q). %K A258642 nonn %O A258642 1,1 %A A258642 _Zak Seidov_, Jun 06 2015