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 A196123 #5 Mar 30 2012 18:57:49 %S A196123 8,5,28,12,60,33,104,40,160,85,60,228,308,35,161,112,400,144,504,39, %T A196123 63,261,620,220,748,385,264,888,95,143,533,364,420,195,705,544,175, %U A196123 612,323,760,840,45,279,399,56,77,407,575,84,675,80,559,899,136,165 %N A196123 Positive integers b for which there is a primitive 4-Pythagorean triple (a,b,c) satisfying a<=b. %C A196123 See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences. %t A196123 (See A196119.) %Y A196123 Cf. A195770, A196119, A196122, A196124. %K A196123 nonn %O A196123 1,1 %A A196123 _Clark Kimberling_, Sep 28 2011