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 A096892 #3 Mar 30 2012 17:29:16 %S A096892 6,15,28,45,66,91,20,153,190,35,276,325,378,435,496,77,42,703,104,861, %T A096892 946,63,1128,1225,170,1431,88,209,1770,1891,72,117,2278,299,2556,2701, %U A096892 350,99,3160,3321,3486,187,464,4005,130,527,228,4753,110,5151,5356,165 %N A096892 Least semiperimeter of primitive Pythagorean triangles with odd leg 2n+1. %Y A096892 Cf. A088557, A088558, A096891-A096900. %K A096892 nonn %O A096892 1,1 %A A096892 _Ray Chandler_, Jul 14 2004