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 A025286 #17 Feb 26 2015 16:58:06 %S A025286 325,425,650,725,845,850,925,1025,1250,1300,1325,1445,1450,1525,1690, %T A025286 1700,1825,1850,2050,2225,2425,2525,2600,2650,2725,2825,2873,2890, %U A025286 2900,2925,3050,3125,3380,3400,3425,3650,3700,3725,3757,3825,3925,4100,4205 %N A025286 Numbers that are the sum of 2 nonzero squares in exactly 3 ways. %C A025286 A025426(a(n)) = 3. - _Reinhard Zumkeller_, Feb 26 2015 %H A025286 Donovan Johnson, <a href="/A025286/b025286.txt">Table of n, a(n) for n = 1..1000</a> %H A025286 G. Xiao, <a href="http://wims.unice.fr/~wims/en_tool~number~twosquares.en.html">Two squares</a> %H A025286 <a href="/index/Su#ssq">Index entries for sequences related to sums of squares</a> %o A025286 (Haskell) %o A025286 a025286 n = a025286_list !! (n-1) %o A025286 a025286_list = filter ((== 3) . a025426) [1..] %o A025286 -- _Reinhard Zumkeller_, Feb 26 2015 %Y A025286 Cf. A025426. %K A025286 nonn %O A025286 1,1 %A A025286 _David W. Wilson_