Number of prime graphs, G, on n vertices which do not contain a degree-1 vertex in G nor in co-G.
A385693
Number of prime graphs, G, on n vertices which do not contain a degree-1 vertex in G nor in co-G.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =6a(6) =76a(7) =1990a(8) =84040a(9) =5749698
External references
- oeis: A385693