Triangle read by rows: T(n,k) is the number of noncrossing forests with n vertices and k components (1<=k<=n).
A094021
Triangle read by rows: T(n,k) is the number of noncrossing forests with n vertices and k components (1<=k<=n).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =3a(5) =1a(6) =12a(7) =14a(8) =6a(9) =1a(10) =55a(11) =75a(12) =40a(13) =10a(14) =1a(15) =273a(16) =429a(17) =275a(18) =90a(19) =15a(20) =1a(21) =1428a(22) =2548a(23) =1911a(24) =770a(25) =175a(26) =21a(27) =1a(28) =7752a(29) =15504
External references
- oeis: A094021