Number of crossing, non-capturing set partitions of {1..n}.
A326245
Number of crossing, non-capturing set partitions of {1..n}.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =7a(6) =34a(7) =141a(8) =537a(9) =1941a(10) =6777a(11) =23096a(12) =77340
External references
- oeis: A326245