Number of nonempty labeled antichains of subsets of [n] such that the largest subset is of size 2.

A379706

Number of nonempty labeled antichains of subsets of [n] such that the largest subset is of size 2.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =10a(4) =97a(5) =1418a(6) =40005a(7) =2350474a(8) =286192257a(9) =71213783154

External references