A137585 Triangle read by rows: A054525 * A026794.
1, 0, 1, 1, 0, 1, 2, 0, 0, 1, 4, 1, 0, 0, 1, 5, 1, 0, 0, 0, 1, 10, 2, 1, 0, 0, 0, 1, 12, 3, 1, 0, 0, 0, 0, 1, 20, 4, 1, 1, 0, 0, 0, 0, 1, 25, 5, 2, 1, 0, 0, 0, 0, 0, 1, 41, 8, 3, 1, 1, 0, 0, 0, 0, 0, 1, 47, 10, 3, 1, 1, 0, 0, 0, 0, 0, 0, 1, 76, 14, 5, 2, 1, 1, 0, 0, 0, 0, 0, 0, 1
Offset: 1
Examples
First few rows of the triangle: 1; 0, 1; 1, 0, 1; 2, 0, 0, 1; 4, 1, 0, 0, 1; 5, 1, 0, 0, 0, 1; 10, 2, 1, 0, 0, 0, 1; 12, 3, 1, 0, 0, 0, 0, 1; ...
Formula
Mobius transform of A026794, the partition triangle.
Comments