Number of n-node (unlabeled) graphs with girth 4.
A128237
Number of n-node (unlabeled) graphs with girth 4.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =15a(4) =59a(5) =296a(6) =1604a(7) =11303a(8) =102108a(9) =1250114a(10) =20738069a(11) =467523871a(12) =14230096759a(13) =581439661069
External references
- oeis: A128237