A130307 A051731 * A130296.

1, 3, 1, 4, 1, 1, 7, 2, 1, 1, 6, 1, 1, 1, 1, 12, 3, 2, 1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 15, 3, 2, 2, 1, 1, 1, 1, 13, 2, 2, 1, 1, 1, 1, 1, 1, 18, 3, 2, 2, 2, 1, 1, 1, 1, 1

Offset: 0

Author

Gary W. Adamson, May 20 2007

Keywords

• nonn

Comments

Row sums = A129235, (1, 4, 6, 11, 10, 20, 14, ...).

Left column = sigma(n), A000203.

Examples

			First few rows of the triangle:
   1;
   3, 1;
   4, 1, 1;
   7, 2, 1, 1;
   6, 1, 1, 1, 1;
  12, 3, 2, 1, 1, 1;
   8, 1, 1, 1, 1, 1, 1;
  ...
		

Crossrefs

Cf. A130296, A051731, A129235, A000203.

Formula

Inverse Moebius transform of A130296.