Irregular triangle read by rows: T(n,k) (n >= 2) is the number of cubic graphs on 2n nodes with diameter k.

A204329

Irregular triangle read by rows: T(n,k) (n >= 2) is the number of cubic graphs on 2n nodes with diameter k.

Terms

    a(0) =1a(1) =0a(2) =2a(3) =0a(4) =2a(5) =3a(6) =0a(7) =1a(8) =15a(9) =2a(10) =1a(11) =0a(12) =0a(13) =34a(14) =43a(15) =6a(16) =2a(17) =0a(18) =0a(19) =34a(20) =351a(21) =93a(22) =24a(23) =6a(24) =1a(25) =0a(26) =0a(27) =14a(28) =2167a(29) =1499

External references