%I #4 Mar 30 2012 17:39:19

%S 1,1,0,1,1,0,1,0,2,0,1,1,2,2,0,1,0,0,0,4,0,1,1,2,2,4,2,0,1,0,2,0,4,0,

%T 6,0,1,1,0,2,4,0,6,4,0,1,0,2,0,0,0,6,0,6,0

%N Triangle read by rows: T(n,k) = A054521(n,k)*A000010(k), 1<=k<=n .

%C Row sums = A053570.

%F A054521 * M, as infinite lower triangular matrices; M = phi(n) in the main diagonal and the rest zeros.

%e First few rows of the triangle are:

%e 1;

%e 1, 0;

%e 1, 1, 0;

%e 1, 0, 2, 0;

%e 1, 1, 2, 2, 0;

%e 1, 0, 0, 0, 4, 0;

%e 1, 1, 2, 2, 4, 2, 0;

%e ...

%Y Cf. A054521, A000010, A053570.

%K nonn,tabl

%O 1,9

%A _Gary W. Adamson_, Jan 17 2007

%E Edited by _R. J. Mathar_, Jan 09 2008