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 A085625 #16 Sep 07 2024 15:44:23 %S A085625 25,50,65,85,100,125,130,145,169,170,185,200,205,221,225,250,260,265, %T A085625 289,290,305,338,340,365,370,377,400,410,442,445,450,481,485,493,500, %U A085625 505,520,530,533,545,565,578,580,585,610,629,676,680,685,689,697,730 %N A085625 Numbers that are the sum of 2 squares in exactly 2 ways. %C A085625 Wells erroneously writes that this sequence begins as 50, 65, 85, 145, ... . - _Stefano Spezia_, Sep 07 2024 %D A085625 David Wells, The Penguin Dictionary of Curious and Interesting Numbers. Penguin Books, NY, 1986, Revised edition 1987. See p. 125. %H A085625 Robert Price, <a href="/A085625/b085625.txt">Table of n, a(n) for n = 1..16794</a> %F A085625 n such that A000161(n) = 2. %e A085625 a(3) = 65 because 65 = 8^2 + 1^2 = 7^2 + 4^2; %e A085625 a(4) = 85 because 85 = 9^2 + 2^2 = 7^2 + 6^2. %t A085625 Select[Range[730], Length[PowersRepresentations[#,2,2]]==2 &] (* _Stefano Spezia_, Sep 07 2024 *) %Y A085625 Cf. A000161, A000446, A224443, A294282, A295153, A295489, A295748. %K A085625 nonn %O A085625 1,1 %A A085625 _Hugo Pfoertner_, Jul 09 2003