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 A088510 #6 Mar 31 2012 10:26:02 %S A088510 4,12,15,24,21,40,35,60,63,45,84,56,112,55,99,77,80,144,72,143,91,180, %T A088510 117,220,140,195,105,165,264,132,176,255,120,312,153,221,168,187,364, %U A088510 323,156,260,208,420,171,285,209,247,399,480,308,252,544,357,483,231 %N A088510 Long leg of primitive Pythagorean triangles sorted on product of sides. %Y A088510 Cf. A063011. %K A088510 nonn %O A088510 1,1 %A A088510 _Lekraj Beedassy_, Nov 14 2003 %E A088510 More terms from _Ray Chandler_, Nov 16 2003