A130302 A000012 * A130296.

1, 3, 1, 6, 2, 1, 10, 3, 2, 1, 15, 4, 3, 2, 1, 21, 5, 4, 3, 2, 1, 28, 6, 5, 4, 3, 2, 1, 36, 7, 6, 5, 4, 3, 2, 1

Offset: 1

Author

Gary W. Adamson, May 20 2007

Keywords

• nonn
• tabl

Comments

Row sums = n^2. A130303 = A130296 * A000012.

Examples

			First few rows of the triangle are:
1;
3, 1;
6, 2, 1;
10, 3, 2, 1;
15, 4, 3, 2, 1;
21, 5, 4, 3, 2, 1;
...
		

Crossrefs

Cf. A130296, A130303.

Formula

A000012 * A130296 as infinite lower triangular matrices. Triangular series as the left border; (1,2,3...) in all other columns.