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 A106547 #5 Mar 31 2012 14:11:37 %S A106547 0,0,0,0,0,0,0,0,0,0,121,0,0,0,0,0,289,0,0,0,0,0,529,0,625,0,0,0,0,0, %T A106547 961,0,0,0,0,0,0,0,0,0,1681,0,0,0,0,0,0,0,0,0,2601,0,2809,0,0,0,0,0, %U A106547 3481,0,0,0,0,0,4225,0,4489,0,0,0,0,0,5329,0,0,0,0,0,6241,0,0,0,6889,0 %N A106547 Perfect squares n^2 which are neither the sum nor the difference of two primes (otherwise 0). %F A106547 a(n) = Min(A106544(n), n^2-A106546(n)). %Y A106547 Cf. A106544-A106548, A106562-A106564, A106571, A106573-A106575, A106577. %K A106547 easy,nonn %O A106547 1,11 %A A106547 _Alexandre Wajnberg_, May 08 2005 %E A106547 Corrected and extended by _Ray Chandler_, May 12 2005