Number of connected triangle-free graphs on n nodes with edge chromatic number 3.
A207408
Number of connected triangle-free graphs on n nodes with edge chromatic number 3.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =4a(5) =12a(6) =27a(7) =84a(8) =212a(9) =694a(10) =2105a(11) =7354a(12) =25469a(13) =95631a(14) =364957
External references
- oeis: A207408