%I
%S 1,0,3,0,3,0,3,9,0,3,9,0,3,18,0,3,18,27,0,3,27,27,0,3,27,
%T 54,0,3,36,81,0,3,36,108,81,0,3,45,135,81,0,3,45,189,162,0,
%U 3,54,216,243,0,3,54,270,405,0,3,63,324,486,243,0,3,63,378
%N Triangle read by rows: T(n,k) = (3) * T(nk,k1) + T(nk,k) with T(0,0) = 1 for 0 <= k <= A003056(n).
%H Seiichi Manyama, <a href="/A292130/b292130.txt">Rows n = 0..481, flattened</a>
%e First few rows are:
%e 1;
%e 0, 3;
%e 0, 3;
%e 0, 3, 9;
%e 0, 3, 9;
%e 0, 3, 18;
%e 0, 3, 18, 27;
%e 0, 3, 27, 27;
%e 0, 3, 27, 54;
%e 0, 3, 36, 81;
%e 0, 3, 36, 108, 81.
%Y Row sums give A292128.
%Y Columns 01 give A000007, (1)*A010701.
%Y Cf. A291971.
%K sign,tabf
%O 0,3
%A _Seiichi Manyama_, Sep 09 2017
