Number of unlabeled rooted trees with n 4-colored nodes.

A136793

Number of unlabeled rooted trees with n 4-colored nodes.

Terms

    a(0) =4a(1) =16a(2) =104a(3) =752a(4) =5996a(5) =50512a(6) =444256a(7) =4027360a(8) =37383044a(9) =353486320a(10) =3393093696a(11) =32976302800a(12) =323839605124

External references