A128142 A128132 * A122432 (unsigned).

1, 5, 2, 15, 8, 3, 34, 21, 11, 4, 65, 44, 27, 14, 5, 111, 80, 54, 33, 17, 6, 175, 132, 95, 64, 39, 20, 7, 260, 203, 153, 110, 74, 45, 23, 8, 369, 296, 231, 174, 125, 84, 51, 26, 9, 505, 414, 332, 259, 195, 140, 94, 57, 29, 10

Offset: 1

Author

Gary W. Adamson, Feb 16 2007

Keywords

• nonn
• tabl

Comments

Row sums = A006325 starting (1, 7, 26, 70, 155, ...).

Left border = A006003: (1, 5, 15, 34, 65, 111, ...).

A128141 = A122432 * A128132.

Examples

			First few rows of the triangle:
    1;
    5,   2;
   15,   8,  3;
   34,  21, 11,  4;
   65,  44, 27, 14,  5;
  111,  80, 54, 33, 17,  6;
  175, 132, 95, 64, 39, 20,  7;
  ...
		

Crossrefs

Cf. A128132, A122432, A006325, A128141, A006003.

Formula

A128132 * A122432 (unsigned); as infinite lower triangular matrices.