A144329 Triangle read by rows, A000012 * A144328.

1, 2, 1, 3, 2, 2, 4, 3, 4, 3, 5, 4, 6, 6, 4, 6, 5, 8, 9, 8, 5, 7, 6, 10, 12, 12, 10, 6, 8, 7, 12, 15, 16, 15, 12, 7, 9, 8, 14, 18, 20, 20, 18, 14, 8, 10, 9, 16, 21, 24, 25, 24, 21, 16, 9, 11, 10, 18, 24, 28, 30, 30, 28, 24, 18, 10

Offset: 1

Author

Gary W. Adamson, Sep 18 2008

Keywords

• nonn
• tabl

Comments

Row sums = A004006: (1, 3, 7, 14, 25, 41, 63, 92, 129,...).

Examples

			First few rows of the triangle =
1;
2, 1;
3, 2, 2;
4, 3, 4, 3;
5, 4, 6, 6, 4;
6, 5, 8, 9, 8, 5;
7, 6, 10, 12 12, 10, 6;
8, 7, 12, 15, 16, 15, 12, 7;
...
		

Crossrefs

A144328, Cf. A004006

Formula

Triangle read by rows A000012 * A144328.

Partial sums of A144328 by columns.