Triangle read by rows: T(n,k) is the number of digraphs on n labeled nodes with k arcs and a global source (or sink), n >= 1, k = 0..(n-1)^2.
A350793
Triangle read by rows: T(n,k) is the number of digraphs on n labeled nodes with k arcs and a global source (or sink), n >= 1, k = 0..(n-1)^2.
Terms
- a(0) =1a(1) =0a(2) =2a(3) =0a(4) =0a(5) =9a(6) =12a(7) =3a(8) =0a(9) =0a(10) =0a(11) =64a(12) =252a(13) =396a(14) =320a(15) =144a(16) =36a(17) =4a(18) =0a(19) =0a(20) =0a(21) =0a(22) =625a(23) =4860a(24) =17060a(25) =35900a(26) =50775a(27) =51300a(28) =38340a(29) =21540
External references
- oeis: A350793