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 A196156 #5 Mar 30 2012 18:57:49 %S A196156 3,6,9,40,12,8,15,32,119,18,80,21,69,240,11,24,65,27,40,120,403,16,30, %T A196156 64,238,33,65,185,608,36,160,15,39,96,264,855,42,138,480,16,24,45,96, %U A196156 133,200,357,22,48,75,130,297,35,51,176,464,54,80,240,806,48,57 %N A196156 Positive integers b for which there is a 5-Pythagorean triple (a,b,c) satisfying a<=b. %C A196156 See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences. %t A196156 (See A196155.) %Y A196156 Cf. A195770, A196155, A196157, A196158, A196159. %K A196156 nonn %O A196156 1,1 %A A196156 _Clark Kimberling_, Sep 28 2011