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 A071342 #5 Oct 19 2017 03:14:02 %S A071342 6,12,30,48,48,72,96,96,120,144,168,168,192,240,240,240,264,312,336, %T A071342 336,336,384,384,384,408,432,480,480,504,528,552,552,552,672,672,696, %U A071342 720,720,720,720,768,768,816,864,864,864,936,936,936,936,936,1008,1008 %N A071342 a(n) = the maximum number of lattice points touched by an origin-centered sphere with radius <= n. %F A071342 a(n) = max(i=0 to n^2) A005875(i) %e A071342 a(4 to 5)=48 because the sphere with radius sqrt(14) touches 48 lattice points; but no sphere touches more, until the radius is sqrt(26). %o A071342 (FORTRAN) See A071339. %Y A071342 Cf. A005875, A071339-A071347. %K A071342 easy,nonn %O A071342 1,1 %A A071342 _Hugo Pfoertner_, May 22 2002 %E A071342 Edited by _Don Reble_, Nov 06 2005