A134224 A004736 + A134082 - I as infinite lower triangular matrices; I = Identity matrix.

1, 4, 1, 3, 6, 1, 4, 3, 8, 1, 5, 4, 3, 10, 1, 6, 5, 4, 3, 12, 1, 7, 6, 5, 4, 3, 14, 1, 8, 7, 6, 5, 4, 3, 16, 1, 9, 8, 7, 6, 5, 4, 3, 18, 1, 10, 9, 8, 7, 6, 5, 4, 3, 20, 1

Offset: 0

Author

Gary W. Adamson, Oct 14 2007

Keywords

• nonn
• tabl

Comments

Row sums = A052905: (1, 5, 10, 16, 23, 31, 40, ...).

Examples

			First few rows of the triangle:
  1;
  4,  1;
  3,  6,  1;
  4,  3,  8,  1;
  5,  4,  3, 10,  1;
  6,  5,  4,  3, 12,  1;
  7,  6,  5,  4,  3, 14,  1;
  ...
		

Crossrefs

Cf. A004736, A052905, A134082.