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A006786 Square-free graphs on n vertices.
(Formerly M1149)
+0
3
1, 2, 4, 8, 18, 44, 117, 351, 1230, 5069, 25181, 152045, 1116403, 9899865, 104980369, 1318017549, 19427531763 (list; graph; listen)
OFFSET

1,2

REFERENCES

B. D. McKay, personal communication.

LINKS

Eric Weisstein's World of Mathematics, Square-Free Graph

B. D. McKay, Isomorph-free exhaustive generation, J Algorithms, 26 (1998) 306-324.

CROSSREFS

Cf. A077269.

Sequence in context: A114203 A100132 A088457 this_sequence A125809 A000117 A006771

Adjacent sequences: A006783 A006784 A006785 this_sequence A006787 A006788 A006789

KEYWORD

nonn

AUTHOR

njas

EXTENSIONS

2 more terms (from the McKay paper) from Vladeta Jovovic (vladeta(AT)Eunet.yu), May 17 2008

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Last modified July 19 08:04 EDT 2008. Contains 142098 sequences.


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