Cage order $n(4,9)$
The order of a $(4,9)$-cage, a $4$-regular graph of girth $9$ of minimum order.
Lower bound:
Unknown
Upper bound:
$275$
Updates
-
2008
Upper bound: $275$
G. Exoo, Regular graphs of given degree and girth.
[via Dynamic Cage Survey, Geoffrey Exoo and Robert Jajcay, 2013-07-26]