Number of biconnected triangle-free graphs on n nodes with chromatic number 3.
A126756
Number of biconnected triangle-free graphs on n nodes with chromatic number 3.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =1a(6) =8a(7) =36a(8) =269a(9) =2418a(10) =29216a(11) =458445a(12) =9373692a(13) =249530113
External references
- oeis: A126756