A129564 A129360 * A000012.

1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1

Offset: 1

Author

Gary W. Adamson, Apr 21 2007

Keywords

• nonn
• tabl

Comments

Row sums = phi(2*n), A062570: (1, 2, 2, 4, 4, 4, 6, 8, 6, 8, ...).

Examples

			First few rows of the triangle:
  1;
  1, 1;
  0, 1, 1;
  1, 1, 1, 1;
  0, 1, 1, 1, 1;
  0, 0, 1, 1, 1, 1;
  0, 1, 1, 1, 1, 1, 1;
  1, 1, 1, 1, 1, 1, 1, 1;
  ...
		

Crossrefs

Cf. A129360, A000012, A062570.

Formula

A129360 * A000012 as infinite lower triangular matrices.