OFFSET
3,2
COMMENTS
The first column is for girth at least 3. The row length sequence starts: 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4. The row length is incremented to g-2 when 2n reaches A054760(5,g).
LINKS
EXAMPLE
1;
3;
60, 1;
7848, 1;
3459383, 7;
2585136675, 388;
2807105250897, 406824;
CROSSREFS
Connected 5-regular simple graphs with girth at least g: this sequence (triangle); chosen g: A006821 (g=3), A058275 (g=4), A205295 (g=5).
Connected 5-regular simple graphs with girth exactly g: A184950 (triangle); chosen g: A184953 (g=3), A184954 (g=4), A184955 (g=5).
KEYWORD
nonn,hard,more,tabf
AUTHOR
Jason Kimberley, Jan 10 2012
EXTENSIONS
a(14) from Jason Kimberley, Dec 26 2012
STATUS
approved