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 A093365 #5 Mar 31 2012 10:29:04 %S A093365 2,5,8,26,34,65,146,170,194,218,242,1445,2225,2309,2393,2477,2561, %T A093365 2645,2729,2813,2897,71633,479581,664445,685697,1141625,1184129, %U A093365 4281133,4344889,4408645,31694041,32519173,33344305 %N A093365 Least number which is the end of an arithmetic progression of n numbers that are the sums of two nonzero squares. %C A093365 The next term is > 225000000. %H A093365 Ben Green and Terence Tao, <a href="http://arXiv.org/abs/math/0404188">The primes contain arbitrarily long arithmetic progressions</a> %e A093365 Example: a(6)=65: 5=2^2+1^2, 17=4^2+1^2, 29=5^2+2^2, 41=5^2+4^2, 53=7^2+2^2, 65=7^2+4^2. %Y A093365 Arithmetic progressions in A000404. For gaps see A093366. %Y A093365 Cf. A005115, arithmetic progressions of primes. %K A093365 nonn %O A093365 1,1 %A A093365 _Hugo Pfoertner_, Apr 27 2004 %E A093365 More terms from _Hugo Pfoertner_, Apr 29 2004 %E A093365 Corrected erroneous terms starting at a(28) _Hugo Pfoertner_, Oct 15 2010