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 A112656 #3 Mar 31 2012 10:26:05
%S A112656 3,5,8,20,7,12,9,28,48,33,11,16,65,36,39,13,60,20,88,15,44,119,85,51,
%T A112656 24,17,104,133,52,95,140,57,19,84,28,105,120,21,60,207,160,161,96,115,
%U A112656 204,32,69,23,225,136,252,68,175,180
%N A112656 Shortest side (or short leg) of primitive Pythagorean triangles sorted on middle side (or long leg) A020883.
%C A112656 Complete triple is {a(n),A020883(n),A113482(n)}.
%K A112656 nonn
%O A112656 1,1
%A A112656 _Lekraj Beedassy_, Jan 12 2006