A131033 A130296 * A097806.

1, 3, 1, 4, 2, 1, 5, 2, 2, 1, 6, 2, 2, 2, 1, 7, 2, 2, 2, 2, 1, 8, 2, 2, 2, 2, 2, 1, 9, 2, 2, 2, 2, 2, 2, 1, 10, 2, 2, 2, 2, 2, 2, 2, 1, 11, 2, 2, 2, 2, 2, 2, 2, 2, 1, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 13, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 14, 2, 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 A016777.

A131032 = A097806 * A130296. [corrected by Georg Fischer, Oct 10 2021]

Examples

			First few rows of the triangle are:
1;
3, 1;
4, 2, 1;
5, 2, 2, 1;
6, 2, 2, 2, 1;
7, 2, 2, 2, 2, 1;
...
		

Crossrefs

Cf. A016777, A097806, A130296.

Formula

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

Extensions

Definition corrected, a(36)=2 inserted and more terms from Georg Fischer, Oct 10 2021

More terms from Michel Marcus, Oct 11 2021