A225568 Number of entries in each row of the irregular triangles specified in A225777 and A225542.
1, 1, 2, 1, 2, 5, 1, 3, 5, 10, 1, 3, 6, 10, 17, 1, 4, 9, 12, 17, 26, 1, 4, 9, 14, 19, 26, 37, 1, 5, 10, 19, 22, 29, 29, 50
Offset: 1
Keywords
Examples
The 6th rows of A225777 and A225542, that is, when n = 3 and k = 3, both contain 5 entries, so a(6) = 5.