%I
%S 1,1,0,1,1,0,0,0,0,0,1,1,1,1,0,1,0,0,0,1,0,1,1,1,1,1,1,0,
%T 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,1,0,1,0
%N Triangle read by rows: A128407 * A054521.
%C Row sums = A023900: (1, 1, 2, 0, 4, 2, 6,...) Left border = mu(n), A008683.
%F A128407 * A054521 as infinite lower triangular matrices.
%e First few rows of the triangle are:
%e 1;
%e 1, 0;
%e 1, 1, 0;
%e 0, 0, 0, 0;
%e 1, 1, 1, 1, 0;
%e 1, 0, 0, 0, 1, 0;
%e 1, 1, 1, 1, 1, 1, 0;
%e 0, 0, 0, 0, 0, 0, 0, 0;
%e ...
%Y Cf. A128407, A054521, A008683, A023900.
%K tabl,sign
%O 1,1
%A _Gary W. Adamson_, Mar 03 2007
