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 A195995 #5 Mar 30 2012 18:57:49 %S A195995 3,6,18,9,18,12,45,10,20,15,36,84,18,35,60,21,36,135,28,54,24,90,198, %T A195995 20,27,40,77,126,30,72,273,54,104,33,45,168,360,36,70,135,90,216,39, %U A195995 120,459,30,60,88,170,42,72,270,570,45,56,108,209,330,48,180,693 %N A195995 Positive integers b for which there is a (-2/3)-Pythagorean triple (a,b,c) satisfying a<=b. %C A195995 See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences. %t A195995 (See A195994.) %Y A195995 Cf. A195770, A195994, A195998. %K A195995 nonn %O A195995 1,1 %A A195995 _Clark Kimberling_, Sep 26 2011