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 A268496 #7 Feb 10 2016 15:47:37
%S A268496 0,1,3,5,7,9,15,16,17,23,24,29,40,49,52,63,72,73,74,77,83,89,92,93,
%T A268496 105,110,130,145,154,161,162,165,175,182,184,189,190,198,205,213,217,
%U A268496 218,219,222,237,239,247,251,253,255,278,293,308,311,313,331,336,339,346,351,353,362,366
%N A268496 Indices of records in A268630 (= a(n)^2+a(n+1) is prime).
%C A268496 See A268497 for the actual record values.
%o A268496 (PARI) show(n, f="/tmp/b268496.txt", c=0, a=0, u=[a-1])={for(n=1, n, a>=u[#u]&&if(f, write(f, c++-1, " "n-1), print1(n-1", ")); u=setunion(u, [a]); while(#u>1&&u[2]==u[1]+1, u=u[^1]); for(k=u[1]+1, 9e9, !setsearch(u, k) && isprime(a*a+k) && (a=k) && break))}
%K A268496 nonn
%O A268496 0,3
%A A268496 _M. F. Hasler_, Feb 09 2016