Number of connected triangle-free graphs on n nodes with edge chromatic number 4.
A207410
Number of connected triangle-free graphs on n nodes with edge chromatic number 4.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =4a(6) =25a(7) =136a(8) =772a(9) =4953a(10) =35340a(11) =288335a(12) =2632792a(13) =26726855a(14) =296550560
External references
- oeis: A207410