A131032 A097806 * A130296.

1, 3, 1, 5, 2, 1, 7, 2, 2, 1, 9, 2, 2, 2, 1, 11, 2, 2, 2, 2, 1, 13, 2, 2, 2, 2, 2, 1, 15, 2, 2, 2, 2, 2, 2, 1, 17, 2, 2, 2, 2, 2, 2, 2, 1, 19, 2, 2, 2, 2, 2, 2, 2, 2, 1, 21, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 23, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1

Offset: 1

Author

Gary W. Adamson, Jun 10 2007

Keywords

• nonn
• tabl

Comments

Row sums give A008574.

A131033 = A130296 * A097806.

Examples

			First few rows of the triangle are:
1;
3, 1;
5, 2, 1;
7, 2, 2, 1;
9, 2, 2, 2, 1;
11, 2, 2, 2, 2, 1;
13, 2, 2, 2, 2, 2, 1;
...
		

Crossrefs

Cf. A008574, A097806, A130296, A131033.

Formula

A097806 * A130296 as infinite lower triangular matrices. A097806 = the pairwise operator, A130296 = (1; 2,1; 3,1,1; ...).

Extensions

Definition corrected and more terms from Georg Fischer, Oct 10 2021