OFFSET
0,9
LINKS
CROSSREFS
Not necessarily connected k-regular simple graphs girth exactly 4: this sequence (any k), A185644 (triangle); fixed k: A026797 (k=2), A185134 (k=3), A185144 (k=4).
KEYWORD
nonn,more,hard
AUTHOR
Jason Kimberley, Dec 12 2012
EXTENSIONS
a(10) corrected from 9 to 8 by Jason Kimberley, Feb 22 2013
STATUS
approved