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 A071610 #11 Jul 10 2017 02:33:24 %S A071610 1,2,3,3,4,6,7,9,10,11,13,14,17,18,19,22,25,26,27,29,30,31,34,34,34, %T A071610 36,37,41,43,44,47,52,55,56,59,59,60,66,66,70,74,75,80,86,89,90,91,94, %U A071610 100,103,104,109,115,115,119,125,134,141,146,153,153,157,168,171 %N A071610 Integer radii of the spheres around (0,0,0) that contain record numbers of lattice points. %C A071610 Multiple entries indicate that there is more than one covered sphere with an increase in the number of hit lattice points within a radius difference of 1. %F A071610 a(n) = ceiling(A071609(n)^(1/2)). %Y A071610 Cf. A071342, A071343, A071344, A071609, A071611. %K A071610 nonn %O A071610 1,2 %A A071610 _Hugo Pfoertner_, May 25 2002