Number of simple unlabeled n-node graphs with 4 center nodes.
A052440
Number of simple unlabeled n-node graphs with 4 center nodes.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =7a(4) =0a(5) =18a(6) =118a(7) =1426a(8) =24853a(9) =763319a(10) =39773455a(11) =3569963990
External references
- oeis: A052440