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 A196124 #5 Mar 30 2012 18:57:49 %S A196124 13,11,37,23,73,47,121,59,181,107,83,253,337,61,191,143,433,179,541, %T A196124 71,97,299,661,263,793,431,311,937,143,193,587,419,479,253,767,611, %U A196124 239,683,397,839,923,109,359,481,131,157,503,673,169,781,167,671,1021 %N A196124 Positive integers c for which there is a primitive 4-Pythagorean triple (a,b,c) satisfying a<=b. %C A196124 See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences. %t A196124 (See A196119.) %Y A196124 Cf. A195770, A196119, A196121, A196122, A196123. %K A196124 nonn %O A196124 1,1 %A A196124 _Clark Kimberling_, Sep 28 2011