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 A113397 #3 Apr 02 2015 07:57:12
%S A113397 1,3,3,6,3,7,3,7,10,3,11,7,3,7,11,11,3,11,7,3,11,7,11,15,7,3,7,3,7,26,
%T A113397 7,11,3,19,3,11,11,7,11,11,3,19,3,7,3,23,23,7,3,7,11,3,19
%N A113397 What are the values of k in the term Prime(n+1)^2-Prime(n)^2 = a+k*(Prime(n+1)) if "a" is element of {0,1,...,Prime(n+1)-1}.
%F A113397 Prime(n+1)^2-Prime(n)^2 = a+k*(Prime(n+1)) "a" element of {0, 1, ..., Prime(n+1)-1}
%e A113397 3^2-2^2=2+1*3; 5^2-3^2=1+3*5; 7^2-5^2=3+3*7; 11^2-7^2=6+6*11; 13^2-11^2=9+3*13; etc.
%Y A113397 Cf. A113396.
%K A113397 nonn
%O A113397 1,2
%A A113397 _Marian Kraus_, Oct 26 2005