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 A218553 Order of (5,n) cage, i.e., minimal order of 5-regular graph of girth n. 7
 6, 10, 30, 42 (list; graph; refs; listen; history; text; internal format)
 OFFSET 3,1 COMMENTS a(7) <= 152, a(8) = 170, a(12) = 2730. - From Royle's page via Jason Kimberley, Dec 21 2012 LINKS 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) >= A061547(n+1). CROSSREFS Orders of cages: A054760 (n,k), A000066 (3,n), A037233 (4,n), this sequence (5,n), A218554 (6,n), A218555 (7,n), A191595 (n,5). Sequence in context: A271412 A272278 A272508 * A265857 A256865 A163478 Adjacent sequences:  A218550 A218551 A218552 * A218554 A218555 A218556 KEYWORD hard,more,nonn AUTHOR Arkadiusz Wesolowski, Nov 02 2012 EXTENSIONS a(7) deleted by Jason Kimberley, Dec 21 2012 STATUS approved

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Last modified February 16 20:45 EST 2019. Contains 320189 sequences. (Running on oeis4.)