Triangle read by rows: T(n,k) is the number of unlabeled directed graphs on n nodes with k arcs, k=0..n*(n-1).
A052283
Triangle read by rows: T(n,k) is the number of unlabeled directed graphs on n nodes with k arcs, k=0..n*(n-1).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =4a(8) =4a(9) =4a(10) =1a(11) =1a(12) =1a(13) =1a(14) =5a(15) =13a(16) =27a(17) =38a(18) =48a(19) =38a(20) =27a(21) =13a(22) =5a(23) =1a(24) =1a(25) =1a(26) =1a(27) =5a(28) =16a(29) =61
External references
- oeis: A052283