79818336

Appears in sequences

• Number of directed 3-regular graphs on n nodes.at n=6A219890
• Number of directed 6-regular graphs on n nodes.at n=3A219893
• Triangle read by rows: T(n,k) is the number of k-regular digraphs on n unlabeled nodes, k = 0..n-1.at n=48A350910
• Triangle read by rows: T(n,k) is the number of k-regular digraphs on n unlabeled nodes, k = 0..n-1.at n=51A350910