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A006923 Number of trivalent graphs of girth exactly 3 and 2n nodes.
(Formerly M2944) 		+0
1
1, 1, 3, 13, 63, 399, 3268, 33496, 412943, 5883727, 94159721, 1661723296 (list; graph; listen)
OFFSET

2,3
REFERENCES

CRC Handbook of Combinatorial Designs, 1996, p. 647.

Gordon Royle, personal communication.

CROSSREFS

Sequence in context: A000259 A007855 A107097 this_sequence A011272 A065065 A020086

Adjacent sequences: A006920 A006921 A006922 this_sequence A006924 A006925 A006926

KEYWORD

nonn

AUTHOR

njas

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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