Number of connected triangle-free graphs on n nodes with chromatic number 4.
A126741
Number of connected triangle-free graphs on n nodes with chromatic number 4.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =1a(11) =23a(12) =1085a(13) =75127a(14) =6384013
External references
- oeis: A126741