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A037233
Order of (4,n) cage, i.e., minimal order of 4-regular graph of girth n.
11
5, 8, 19, 26, 67, 80
(list; graph; refs; listen; history; text; internal format)
OFFSET
3,1
COMMENTS
a(9) <= 275, a(10) <= 384, a(12) = 728. - From Royle's page via Jason Kimberley, Dec 26 2012
LINKS
Table of n, a(n) for n=3..8.
Andries E. Brouwer, Cages
Geoff Exoo, Regular graphs of given degree and girth
G. Exoo and R. Jajcay, Dynamic cage survey, Electr. J. Combin. (2008, 2011).
Gordon Royle, Cages of higher valency
Eric Weisstein's World of Mathematics, Cage Graph (claims too much)
FORMULA
a(n) >= A062318(n+1). - Jason Kimberley, Dec 21 2012
CROSSREFS
Orders of cages: A054760 (n,k), A000066 (3,n), this sequence (4,n), A218553 (5,n), A218554 (6,n), A218555 (7,n), A191595 (n,5).
Sequence in context: A347136 A326826 A026595 * A197539 A034453 A269715
Adjacent sequences: A037230 A037231 A037232 * A037234 A037235 A037236
KEYWORD
hard,nonn
AUTHOR
Erich Friedman
EXTENSIONS
Extended by Jason Kimberley, Apr 25 2010
STATUS
approved

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Last modified November 26 08:58 EST 2024. Contains 378115 sequences.
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