Regular triangle where T(n,k) is the number of antichains covering n vertices with k connected components.

A317674

Regular triangle where T(n,k) is the number of antichains covering n vertices with k connected components.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =5a(4) =3a(5) =1a(6) =84a(7) =23a(8) =6a(9) =1a(10) =6348a(11) =470a(12) =65a(13) =10a(14) =1a(15) =7743728a(16) =39598a(17) =1575a(18) =145a(19) =15a(20) =1a(22) =54354104a(23) =144403a(24) =4095a(25) =280a(26) =21a(27) =1a(30) =218033088a(31) =402073a(32) =9100

External references