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 A085266 #6 Feb 16 2025 08:32:50 %S A085266 2,3,4,5,8,9,25,29,61 %N A085266 Numbers having a unique representation as sum of a squarefree number and a square. %C A085266 A085263(a(n))=1; are there more? %C A085266 No more terms through 625000000. - _Ryan Propper_, Jan 05 2008 %H A085266 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/SquareNumber.html">Square Numbers.</a> %H A085266 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Squarefree.html">Squarefree</a> %Y A085266 Cf. A085265, A085267. %K A085266 nonn,more,hard %O A085266 1,1 %A A085266 _Reinhard Zumkeller_, Jun 23 2003