Triangle read by rows: T(n,k) is the number of k-trees with n unlabeled nodes rooted at a hedron with a designated front.

A370773

Triangle read by rows: T(n,k) is the number of k-trees with n unlabeled nodes rooted at a hedron with a designated front.

Terms

    a(0) =0a(1) =1a(2) =0a(3) =1a(4) =1a(5) =0a(6) =1a(7) =2a(8) =1a(9) =0a(10) =1a(11) =5a(12) =2a(13) =1a(14) =0a(15) =1a(16) =12a(17) =7a(18) =2a(19) =1a(20) =0a(21) =1a(22) =30a(23) =26a(24) =7a(25) =2a(26) =1a(27) =0a(28) =1a(29) =74

External references