Number of unlabeled and connected graphs on n vertices which have no induced subgraph isomorphic to the 'fork' (fork = 4 vertices forming a path with a fifth vertex adjacent only to one of the non-end vertices).
A079468
Number of unlabeled and connected graphs on n vertices which have no induced subgraph isomorphic to the 'fork' (fork = 4 vertices forming a path with a fifth vertex adjacent only to one of the non-end vertices).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =20a(5) =89a(6) =446a(7) =2724a(8) =19877a(9) =190403a(10) =2605863a(11) =53510680a(12) =1624371850
External references
- oeis: A079468