%I #5 Apr 10 2013 15:28:24
%S 1,1,0,2,0,0,2,1,0,0,4,1,1,0,0,2,1,1,1,0,0,6,2,2,1,1,0,0,4,3,2,2,1,1,
%T 0,0,6,2,4,2,2,1,1,0,0,4,3,1,2,2,1,1,1,0,0,10,4,5,3,4,1,3,1,1,0,0,4,3,
%U 3,3,2,2,1,1,1,1,0,0
%N Triangle read by rows, square of A054521, 1<=k<=n.
%C Left border = phi(n), A000010.
%C Row sums = A053570: (1, 1, 2, 3, 6, 5, 12, 13,...).
%F Triangle read by rows, square of A054521, 1<=k<=n
%e First few rows of the triangle =
%e 1;
%e 1, 0;
%e 2, 0, 0;
%e 2, 1, 0, 0;
%e 4, 1, 1, 0, 0;
%e 2, 1, 1, 1, 0, 0;
%e 6, 2, 2, 1, 1, 0, 0;
%e 4, 3, 2, 2, 1, 1, 0, 0;
%e 6, 2, 4, 2, 2, 1, 1, 0, 0;
%e ...
%Y Cf. A054521, A000010, A053570.
%K nonn,tabl
%O 1,4
%A _Gary W. Adamson_, Aug 27 2008