Table read by downward diagonals: T(n,k) = number of skeleta of (3+1)-free posets with n clone sets and k tangles.
A221494
Table read by downward diagonals: T(n,k) = number of skeleta of (3+1)-free posets with n clone sets and k tangles.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =5a(5) =1a(6) =12a(7) =28a(8) =16a(9) =2a(10) =55a(11) =165a(12) =152a(13) =47a(14) =4a(15) =273a(16) =1001a(17) =1265a(18) =658a(19) =136a(20) =9a(21) =1428a(22) =6188a(23) =9919a(24) =7315a(25) =2547a(26) =392a(27) =21a(28) =7752a(29) =38760
External references
- oeis: A221494