Number of single-crossing partitions on n nodes.

A287220

Number of single-crossing partitions on n nodes.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =4a(4) =10a(5) =36a(6) =85a(7) =312a(8) =737a(9) =2760a(10) =6604a(11) =25176

External references