Number of, not necessarily connected, regular simple graphs on n vertices with girth exactly 3.
A198313
Number of, not necessarily connected, regular simple graphs on n vertices with girth exactly 3.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =1a(5) =1a(6) =4a(7) =4a(8) =15a(9) =23a(10) =162a(11) =540a(12) =18958a(13) =389417a(14) =50314520a(15) =2942196930
External references
- oeis: A198313