A052453 - OEIS

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A052453

Number of nonisomorphic (3,n) cage graphs.

9

1, 1, 1, 1, 1, 1, 18, 3, 1, 1

(list; graph; refs; listen; history; text; internal format)

OFFSET

3,7

LINKS

Table of n, a(n) for n=3..12.

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)

EXAMPLE

a(12) = 1 from the unique generalized hexagon of order 2.

CROSSREFS

Cf. A000066 (size of these graphs).

Sequence in context: A040322 A040323 A321260 * A040315 A040316 A135216

Adjacent sequences: A052450 A052451 A052452 * A052454 A052455 A052456

KEYWORD

nonn,more,hard

AUTHOR

Eric W. Weisstein

EXTENSIONS

a(11) from B. D. McKay and W. Myrvold.

STATUS

approved

NODES