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 A071345 #5 Oct 19 2017 03:14:02 %S A071345 8,32,104,192,312,576,768,960,1344,1872,1920,2496,2976,3072,4608,4608, %T A071345 5760,5760,6912,8064,8064,9672,10368,11520,11520,14976,14976,14976, %U A071345 17424,17784,18432,22464,23808,23808,26208,26208,29760,29952,32832 %N A071345 a(n) = the maximum number of lattice points touched by an origin-centered 4d-sphere with radius <= n. %F A071345 a(n) = max(1=0 to n^2) A000118(i) %e A071345 a(4)=192 because the 4d-sphere with radius sqrt(14) touches 192 lattice points. %o A071345 (FORTRAN) See A071339. %Y A071345 Cf. A000118, A071339-A071347. %K A071345 easy,nonn %O A071345 1,1 %A A071345 _Hugo Pfoertner_, May 22 2002 %E A071345 Edited by _Don Reble_, Nov 06 2005