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A077269
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Number of connected squarefree graphs on n nodes.
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1
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1, 1, 2, 3, 8, 19, 57, 186, 740, 3389, 18502, 120221, 932260, 8596844, 93762704, 1201732437, 17992683043
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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LINKS
| Felix Arends, Joel Ouaknine, and Charles W. Wampler, On Searching for Small Kochen-Specker Vector Systems (extended version).
Eric Weisstein's World of Mathematics, Square-Free Graph
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CROSSREFS
| Cf. A006786.
Sequence in context: A148040 A148041 A148042 * A148043 A007999 A006609
Adjacent sequences: A077266 A077267 A077268 * A077270 A077271 A077272
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KEYWORD
| nonn,more
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com), Nov 01, 2002
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EXTENSIONS
| More terms from Jim Nastos (nastos(AT)gmail.com), Aug 27 2004
4 more terms from Vladeta Jovovic (vladeta(AT)eunet.rs), May 17 2008
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