Number of, not necessarily connected, regular simple graphs on n vertices with girth at least 4.
A185314
Number of, not necessarily connected, regular simple graphs on n vertices with girth at least 4.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =3a(5) =2a(6) =4a(7) =2a(8) =7a(9) =3a(10) =14a(11) =6a(12) =44a(13) =37a(14) =350a(15) =1616a(16) =18042a(17) =193919a(18) =2867779a(19) =32674078a(20) =1581632332a(21) =6705889886
External references
- oeis: A185314