%I
%S 1,0,0,1,0,1,0,0,1,1,2,0,0,0,0,2,1,1,1,0,0,0,0,1,2,0,1,0,0,0,2,0,1,2,
%T 0,1,0,1,0,2,0,0,1,2,1,1,0,0,3,0,2,0,0,1,0,0,2,0,0,1,0,0,0,3,0,1,2,1,
%U 2,0,1,1,0,0,0,3,0,0,2,0,2,1,1,0,2,2,0,0,1,1,0,0,0,2,0,1,0,0,3,3
%N Number of ways to express n as (x^3+y^3+z^3)/(x+y+z) 1<=x<=y<=z<=n.
%o (PARI) a(n)=sum(x=1,n,sum(y=1,x,sum(z=1,y,if((x^3+y^3+z^3)/(x+y+z)n,0,1))))
%K easy,nonn
%O 1,11
%A _Benoit Cloitre_, Aug 18 2002
