%I #6 Mar 30 2012 17:35:17
%S 1,2,3,3,0,4,4,6,0,7,5,0,0,0,6,6,9,8,0,0,12,7,0,0,0,0,0,8,8,12,0,14,0,
%T 0,0,15,9,0,12,0,0,0,0,0,13,10,15,0,0,12,0,0,0,0,18
%N Triangle, T(n,k) = sigma(k) * n/k if k|n, T(n,k) = 0 otherwise.
%F A126988 * M, where M = an infinite matrix with sigma(n) in the main diagonal and the rest zeros.
%e First few rows of the triangle are:
%e 1;
%e 2, 3;
%e 3, 0, 4;
%e 4, 6, 0, 7;
%e 5, 0, 0, 0, 6;
%e 6, 9, 8, 0, 0, 12;
%e ...
%Y Main diagonal = sigma(n), A000203; row sums = A060640.
%Y Cf. A126988.
%K nonn,tabl
%O 1,2
%A _Gary W. Adamson_, Jan 19 2007
%E Edited by _Franklin T. Adams-Watters_, Aug 24 2011
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