Triangle read by rows: T(n,k) is the number of oriented graphs on n unlabeled nodes with k arcs, n >= 0, k = 0..n*(n-1)/2.

A350733

Triangle read by rows: T(n,k) is the number of oriented graphs on n unlabeled nodes with k arcs, n >= 0, k = 0..n*(n-1)/2.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =2a(8) =1a(9) =1a(10) =4a(11) =10a(12) =12a(13) =10a(14) =4a(15) =1a(16) =1a(17) =4a(18) =13a(19) =41a(20) =78a(21) =131a(22) =144a(23) =107a(24) =50a(25) =12a(26) =1a(27) =1a(28) =4a(29) =14

External references