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A138347 Number of squarefree bipartite graphs on n vertices. 5
1, 2, 3, 6, 10, 21, 39, 86, 182, 440, 1074, 2941, 8424, 26720, 90883, 340253, 1384567, 6186907, 30219769, 161763233, 946742190, 6054606722 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

LINKS

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

CROSSREFS

Cf. A006786.

Sequence in context: A032291 A063687 A002988 * A036650 A049889 A014270

Adjacent sequences:  A138344 A138345 A138346 * A138348 A138349 A138350

KEYWORD

nonn

AUTHOR

Vladeta Jovovic (vladeta(AT)eunet.rs), May 18 2008

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Last modified February 14 16:29 EST 2012. Contains 205635 sequences.