Triangle read by rows where T(n,k) is the number of labeled acyclic digraphs on {1..n} with sinks {1..k}.
A368602
Triangle read by rows where T(n,k) is the number of labeled acyclic digraphs on {1..n} with sinks {1..k}.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =5a(8) =3a(9) =1a(10) =0a(11) =79a(12) =33a(13) =7a(14) =1a(15) =0a(16) =3377a(17) =1071a(18) =161a(19) =15a(20) =1a(21) =0a(22) =362431a(23) =92289a(24) =10591a(25) =705a(26) =31a(27) =1a(28) =0a(29) =93473345
External references
- oeis: A368602