A131034 A129686 * A051340.

1, 2, 1, 4, 1, 1, 6, 2, 1, 1, 8, 2, 2, 1, 1, 10, 2, 2, 2, 1, 12, 2, 2, 2, 2, 1, 1, 14, 2, 2, 2, 2, 2, 1, 1, 16, 2, 2, 2, 2, 2, 2, 1, 1

Offset: 0

Author

Gary W. Adamson, Jun 10 2007

Keywords

• nonn
• tabl

Comments

Row sums = A113127: (1, 3, 6, 10, 14, 18, 22, ...).

Examples

			First few rows of the triangle:
   1;
   2, 1;
   4, 1, 1;
   6, 2, 1, 1;
   8, 2, 2, 1, 1;
  10, 2, 2, 2, 1, 1;
  ...
		

Crossrefs

Cf. A129686, A051340, A113127.

Formula

A129686 * A051340 as infinite lower triangular matrices.