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 A025290 #13 Dec 08 2013 06:29:13 %S A025290 105625,180625,203125,265625,406250,422500,453125,525625,531250, %T A025290 578125,640625,714025,722500,812500,828125,855625,906250,950625, %U A025290 953125,1050625,1062500,1140625,1156250,1281250,1390625,1515625,1578125,1625000,1625625 %N A025290 Numbers that are the sum of 2 nonzero squares in exactly 7 ways. %H A025290 Donovan Johnson, <a href="/A025290/b025290.txt">Table of n, a(n) for n = 1..1000</a> %H A025290 <a href="/index/Su#ssq">Index entries for sequences related to sums of squares</a> %K A025290 nonn %O A025290 1,1 %A A025290 _David W. Wilson_