Triangle read by rows: T(n,k) = number of connected cubic graphs on 2n vertices with crossing number k for n >= 2, k >= 0.

A390643

Triangle read by rows: T(n,k) = number of connected cubic graphs on 2n vertices with crossing number k for n >= 2, k >= 0.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =1a(4) =3a(5) =2a(6) =9a(7) =8a(8) =2a(9) =32a(10) =40a(11) =13a(12) =133a(13) =254a(14) =114a(15) =8a(16) =681a(17) =1858a(18) =1347a(19) =172a(20) =2a(21) =3893a(22) =15236a(23) =17241a(24) =4753a(25) =176a(26) =2a(27) =24809a(28) =131576a(29) =222231

External references