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 A196009 #5 Mar 30 2012 18:57:49 %S A196009 5,27,10,9,9,21,15,32,54,120,20,24,18,16,25,81,18,42,279,30,64,45,108, %T A196009 27,35,152,240,27,40,63,72,135,48,40,45,96,245,36,32,50,162,105,36,84, %U A196009 261,55,360,45,48,72,189,60,128,144,90,65,72,45,63,105,216,54 %N A196009 Positive integers b for which there is a (-5/3)-Pythagorean triple (a,b,c) satisfying a<=b. %C A196009 See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences. %t A196009 (See A196008.) %Y A196009 Cf. A195770, A196008, A196083, A196085. %K A196009 nonn %O A196009 1,1 %A A196009 _Clark Kimberling_, Sep 27 2011