OFFSET
0,57
LINKS
CROSSREFS
4-regular simple graphs with girth at least 4: A058348 (connected), this sequence (disconnected), A185346 (not necessarily connected).
Disconnected 4-regular simple graphs with girth at least g: A033483 (g=3), A185244 (g=4), A185245 (g=5), this sequence (g=6).
KEYWORD
nonn,more,hard
AUTHOR
Jason Kimberley, Feb 22 2011
STATUS
approved