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Triangle read by rows: A097806 * A130321 as infinite lower triangular matrices.
2

%I #12 Jul 24 2024 03:05:54

%S 1,3,1,6,3,1,12,6,3,1,24,12,6,3,1,48,24,12,6,3,1,96,48,24,12,6,3,1,

%T 192,96,48,24,12,6,3,1,384,192,96,48,24,12,6,3,1,768,384,192,96,48,24,

%U 12,6,3,1,1536,768,384,192,96,48,24,12,6,3,1,3072,1536,768,384,192,96,48,24,12,6,3,1

%N Triangle read by rows: A097806 * A130321 as infinite lower triangular matrices.

%C Row sums = A033484: (1, 4, 10, 22, 46, 94, 190, ...).

%F A097806 * A130321 as infinite lower triangular matrices. A097806 = the pairwise operator, A130321 = [1; 2,1; 4,2,1; ...]. Triangle, A003945 (1, 3, 6, 12, 24, 48, ...) in every column.

%e First few rows of the triangle:

%e 1;

%e 3, 1;

%e 6, 3, 1;

%e 12, 6, 3, 1;

%e 24, 12, 6, 3, 1;

%e 48, 24, 12, 6, 3, 1;

%e ...

%Y Cf. A003945, A033484, A097806, A130321.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, May 26 2007

%E a(28) = 1 inserted and more terms from _Georg Fischer_, May 29 2023