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%I #5 Mar 23 2022 01:06:56

%S 1,1,1,1,0,2,1,1,0,1,1,0,0,0,2,1,1,2,0,0,2,1,0,0,0,0,0,2,1,1,0,1,0,0,

%T 0,1,1,0,2,0,0,0,0,0,3,1,1,0,0,2,0,0,0,0,2

%N A051731 * A133698.

%C Right border = A001227, the number of odd divisors of n.

%C Row sums = A133700: (1, 2, 3, 3, 3, 6, 3, 4, 6, 6, ...)

%F Inverse Mobius transform of A133698, as infinite lower triangular matrices.

%e First few rows of the triangle:

%e 1;

%e 1, 1;

%e 1, 0, 2;

%e 1, 1, 0, 1;

%e 1, 0, 0, 0, 2;

%e 1, 1, 2, 0, 0, 2;

%e 1, 0, 0, 0, 0, 0, 2;

%e 1, 1, 0, 1, 0, 0, 0, 1;

%e ...

%Y Cf. A051731, A133698, A133700.

%K nonn,tabl

%O 1,6

%A _Gary W. Adamson_, Sep 21 2007