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 A134587 #13 Apr 02 2017 16:18:31 %S A134587 60,275,325,500,525,697,746,1345,1797 %N A134587 A Heron sequence with small terms starting from 60, 275, 325. %C A134587 A Heron sequence is an increasing sequence in which every three consecutive terms are the side lengths of a Heron triangle. A Heron triangle is a triangle with integer sides and integer area. %H A134587 Paul Yiu, K. R. S. Sastry and Shanzhen Gao, <a href="http://www.westga.edu/~integers/j16proc/j16proc.pdf">Heron Sequences</a>, presented on the 2007 Integers Conference and INTEGERS - Electronic Journal of Combinatorial Number Theory, Article 16 Volume 9 Supplement (2009). %K A134587 nonn,fini,full %O A134587 1,1 %A A134587 _Shanzhen Gao_, Nov 02 2007