A134870 A051731 + A000012 - A103451.

1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1

Offset: 1

Author

Gary W. Adamson, Nov 14 2007

Keywords

• nonn
• tabl

Comments

Row sums = A134871: (1, 2, 3, 5, 5, 8, 7, 10, 10, 12, 11, ...).

Examples

			First few rows of the triangle:
  1;
  1, 1;
  1, 1, 1;
  1, 2, 1, 1;
  1, 1, 1, 1, 1;
  1, 2, 2, 1, 1, 1;
  1, 1, 1, 1, 1, 1, 1;
  1, 2, 1, 2, 1, 1, 1, 1;
  ...
		

Crossrefs

Cf. A051731, A134871, A103451, A000012.

Formula

A051731 + A000012 - A103451 as infinite lower triangular matrices.