Number of connected trivalent graphs with 2n nodes and girth exactly 7.
A006927
Number of connected trivalent graphs with 2n nodes and girth exactly 7.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =0a(11) =0a(12) =1a(13) =3a(14) =21a(15) =545a(16) =30368a(17) =1782839a(18) =95079080a(19) =4686063107
External references
- oeis: A006927