%I
%S 1,2,2,2,2,0,3,4,0,1,2,2,0,1,1,4,6,0,1,1,2,2,2,0,1,1,2,2,4,
%T 6,0,2,1,2,2,1,3,4,0,1,1,2,2,1,0,4,6,0,2,2,2,2,1,0,1,2,2,0,
%U 1,1,2,2,1,0,1,2,6,10,0,3,2,4,2,1
%N Triangle defined as the matrix product A051731*A127442, read by rows.
%C Row sums = 0.
%F T(n,k) = sum_{j=k..n} A051731(n,j)*A127442(j,k) = sum_{j=k..n, jn} A127442(j,k), 1<=k<=n.
%e First few rows of the triangle are:
%e 1;
%e 2, 2;
%e 2, 2, 0;
%e 3, 4, 0, 1;
%e 2, 2, 0, 1, 1;
%e 4, 6, 0, 1, 1, 2;
%e 2, 2, 0, 1, 1, 2, 2;
%e ...
%Y Cf. A000005 (column k=1), A051731, A127442.
%K tabl,easy,sign
%O 1,2
%A _Gary W. Adamson_, Jan 14 2007
