Number of 4-colorable (i.e., chromatic number <= 4) simple graphs on n nodes.

A076316

Number of 4-colorable (i.e., chromatic number <= 4) simple graphs on n nodes.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =11a(4) =33a(5) =150a(6) =985a(7) =11390a(8) =243791a(9) =9965456a(10) =753402410a(11) =101344230844

External references