A133703 - OEIS

%I #7 Mar 23 2022 07:39:31

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

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

%N A054525 * A133701.

%C Right border = A001227: (1, 1, 2, 1, 2, 2, 2, 1, 3, ...), the number of odd divisors of n.

%C Row sums = A023136: (1, 1, 3, 1, 3, 3, 3, 1, 5, 3, ...).

%F Mobius transform of triangle A133701.

%e First few rows of the triangle:

%e   1;

%e   0, 1;

%e   1, 0, 2;

%e   0, 0, 0, 1;

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

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

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

%e   ...

%Y Cf. A054525, A133701, A001227, A023136.

%K nonn,tabl,more

%O 1,6

%A _Gary W. Adamson_, Sep 21 2007