Number of connected 3-colorable (i.e., chromatic number <= 3) simple graphs on n nodes.

A076322

Number of connected 3-colorable (i.e., chromatic number <= 3) simple graphs on n nodes.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =17a(5) =81a(6) =519a(7) =5218a(8) =81677a(9) =2014360a(10) =76140741a(11) =4303246908

External references