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%I #38 Aug 12 2020 18:56:20
%S 1,0,1,0,1,1,0,1,1,1,0,3,2,1,1,0,6,4,2,1,1,0,19,10,5,2,1,1,0,59,28,11,
%T 5,2,1,1,0,267,90,32,12,5,2,1,1,0,1380,363,100,33,12,5,2,1,1,0,9832,
%U 1784,397,104,34,12,5,2,1,1,0,90842,11770,1892,407,105,34,12,5,2,1,1
%N Number T(n,k) of triangle-free graphs on n unlabeled nodes with exactly k connected components; triangle T(n,k), n>=0, 0<=k<=n, read by rows.
%H Alois P. Heinz, <a href="/A283417/b283417.txt">Rows n = 0..17, flattened</a>
%H <a href="/index/Mu#multiplicative_completely">Index entries for triangles generated by the Multiset Transformation</a>
%F G.f.: Product_{j>=1} 1/(1-y*x^j)^A024607(j).
%e Triangle T(n,k) begins:
%e 1;
%e 0, 1;
%e 0, 1, 1;
%e 0, 1, 1, 1;
%e 0, 3, 2, 1, 1;
%e 0, 6, 4, 2, 1, 1;
%e 0, 19, 10, 5, 2, 1, 1;
%e 0, 59, 28, 11, 5, 2, 1, 1;
%e 0, 267, 90, 32, 12, 5, 2, 1, 1;
%e 0, 1380, 363, 100, 33, 12, 5, 2, 1, 1;
%e 0, 9832, 1784, 397, 104, 34, 12, 5, 2, 1, 1;
%e ...
%Y Columns k=0-1 give: A000007, A024607.
%Y Row sums give A006785.
%K nonn,tabl
%O 0,12
%A _Alois P. Heinz_, Apr 14 2017