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 A096673 #4 Mar 30 2012 17:29:16 %S A096673 5,37,41,75,113,145,183,195,229,221,255,303,325,375,365,447,435,519, %T A096673 555,557,543,545,577,591,745,785,733,773,807,761,795,879,901,939,1037, %U A096673 1013,1105,1095,1093,1227,1299,1203,1275,1325,1263,1313,1297,1301,1479,1479 %N A096673 Largest side of the first primitive d-arithmetic triangle, where d=A072330(n). %Y A096673 Cf. A072330, A072360, A086909, A089019, A089020, A096672, A096674. %K A096673 nonn %O A096673 1,1 %A A096673 _Ray Chandler_, Jul 03 2004