Triangle T(n,k) read by rows, giving number of k-member minimal covers of an unlabeled n-set, k=1..n.

A055080

Triangle T(n,k) read by rows, giving number of k-member minimal covers of an unlabeled n-set, k=1..n.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =4a(8) =3a(9) =1a(10) =1a(11) =6a(12) =9a(13) =4a(14) =1a(15) =1a(16) =9a(17) =23a(18) =17a(19) =5a(20) =1a(21) =1a(22) =12a(23) =51a(24) =65a(25) =28a(26) =6a(27) =1a(28) =1a(29) =16

External references