Number of non-crossing antichain covers of {1,...,n} without singletons.

A359984

Number of non-crossing antichain covers of {1,...,n} without singletons.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =5a(4) =40a(5) =372a(6) =3815a(7) =41652a(8) =474980a(9) =5591912a(10) =67454545a(11) =829438722a(12) =10358083621a(13) =131013535954

External references