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 A195537 #5 Mar 30 2012 18:57:47 %S A195537 13,2701,5945,6966998461,6985213385,1690221150161,3694758675833, %T A195537 16147954264597,57837917671129,218262857131345,77961963224782817, %U A195537 90065948248084453,773408527734329789,695664827366678317,10488071615106960265 %N A195537 Hypotenuses of primitive Pythagorean triples in A195535 and A195536. %C A195537 See A195500 for discussion and list of related sequences; see A195535 for Mathematica program. %Y A195537 Cf. A195500, A195535, A195536. %K A195537 nonn %O A195537 1,1 %A A195537 _Clark Kimberling_, Sep 20 2011