Triangle read by rows: T(n,k) is the number of unlabeled tiered posets with n elements and height k.
A361957
Triangle read by rows: T(n,k) is the number of unlabeled tiered posets with n elements and height k.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =1a(8) =2a(9) =1a(10) =0a(11) =1a(12) =5a(13) =3a(14) =1a(15) =0a(16) =1a(17) =12a(18) =10a(19) =4a(20) =1a(21) =0a(22) =1a(23) =35a(24) =35a(25) =16a(26) =5a(27) =1a(28) =0a(29) =1
External references
- oeis: A361957