A130298 A051340 * A130296.

1, 5, 2, 12, 4, 3, 22, 6, 5, 4, 35, 8, 7, 6, 5, 51, 10, 9, 8, 7, 6, 70, 12, 11, 10, 9, 8, 7, 92, 14, 13, 12, 11, 10, 9, 8, 117, 16, 15, 14, 13, 12, 11, 10, 9, 145, 18, 17, 16, 15, 14, 13, 12, 11, 10

Offset: 1

Author

Gary W. Adamson, May 20 2007

Keywords

• nonn
• tabl

Comments

Row sums = A003215: (1, 7, 19, 37, 61, 91, ...).

Left border = A000326: (1, 5, 12, 22, 35, ...).

A130299 = A130296 * A051340.

Examples

			First few rows of the triangle:
   1;
   5,  2;
  12,  4,  3;
  22,  6,  5,  4;
  35,  8,  7,  6, 5;
  51, 10,  9,  8, 7, 6;
  70, 12, 11, 10, 9, 8, 7;
  ...
		

Crossrefs

Cf. A051340, A130296, A003215, A000326.

Formula

A051340 * A130296 as infinite lower triangular matrices.