Number of ways to partition a set of n elements into at most n/2 disjoint subsets.

A277364

Number of ways to partition a set of n elements into at most n/2 disjoint subsets.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =1a(4) =8a(5) =16a(6) =122a(7) =365a(8) =2795a(9) =11051a(10) =86472a(11) =422005a(12) =3403127a(13) =19628064a(14) =164029595a(15) =1084948961a(16) =9433737120a(17) =69998462014a(18) =635182667816

External references