A137151 Triangle read by rows: A007318 * A026794.
1, 2, 1, 5, 2, 1, 13, 4, 3, 1, 34, 9, 6, 4, 1, 88, 22, 11, 10, 5, 1, 225, 55, 22, 20, 15, 6, 1, 569, 137, 50, 36, 35, 21, 7, 1, 1425, 338, 122, 65, 70, 56, 28, 8, 1, 3538, 826, 302, 130, 127, 126, 84, 36, 9, 1, 8717, 2002, 740, 296, 221, 252, 210, 120, 45, 10, 1
Offset: 1
Examples
First few rows of the triangle: 1; 2, 1; 5, 2, 1; 13, 4, 3, 1; 34, 9, 6, 4, 1; 88, 22, 11, 10, 5, 1; 225, 55, 22, 20, 15, 6, 1; 569, 137, 50, 36, 35, 21, 7, 1; ...
Formula
Binomial transform of the partition triangle, A026794.
Comments