Number of, not necessarily connected, regular simple graphs on n vertices with girth at least 5.
A185315
Number of, not necessarily connected, regular simple graphs on n vertices with girth at least 5.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =2a(5) =2a(6) =3a(7) =2a(8) =3a(9) =2a(10) =5a(11) =3a(12) =7a(13) =4a(14) =15a(15) =6a(16) =57a(17) =8a(18) =466a(19) =12a(20) =5801a(21) =24a(22) =91091a(23) =3939a(24) =1744378a(25) =4132022a(26) =163639295a(27) =4018022192a(28) =119026596500
External references
- oeis: A185315