%I
%S 0,1,3,4,4,6,8,7,9,10,10,12,12,14,15,16,18,17,21,20,21,23,22,24,24,28,
%T 27,28,31,30,32,31,33,36,35,36,40,39,38,40,40,42,45,44,45,45,49,48,50,
%U 49,53,52,52,54,55,56,60,59,58,60,60,64,63,66,65,66,68,67,71,70,72,71
%N Number of squares in inner rectangle described in A168339.
%F a(n) = A168339(n)  2*(A161357(n)+A161358(n))  4.
%Y Cf. A168339, A161369.
%K nonn
%O 1,3
%A _R. H. Hardin_ and _N. J. A. Sloane_, Nov 27 2009
%E More terms (variables cost2*(dimm+dimn)4 of the C program in A168339) added by _R. J. Mathar_, Mar 06 2010
