|
%I #5 Oct 19 2017 03:14:02
%S 6,12,30,48,48,72,96,96,120,144,168,168,192,240,240,240,264,312,336,
%T 336,336,384,384,384,408,432,480,480,504,528,552,552,552,672,672,696,
%U 720,720,720,720,768,768,816,864,864,864,936,936,936,936,936,1008,1008
%N a(n) = the maximum number of lattice points touched by an origin-centered sphere with radius <= n.
%F a(n) = max(i=0 to n^2) A005875(i)
%e 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 (FORTRAN) See A071339.
%Y Cf. A005875, A071339-A071347.
%K easy,nonn
%O 1,1
%A _Hugo Pfoertner_, May 22 2002
%E Edited by _Don Reble_, Nov 06 2005
|
