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Search: id:A018199
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| A018199 |
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Possible numbers of complements of topologies on 8 points. |
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+0
1
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OFFSET
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0,2
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REFERENCES
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J. I. Brown and S. Watson, The number of complements of a topology on n points is at least 2^n (except for some special cases), Discr. Math., 154 (1996), 27-39.
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CROSSREFS
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Sequence in context: A078235 A028389 A041603 this_sequence A063168 A163683 A103090
Adjacent sequences: A018196 A018197 A018198 this_sequence A018200 A018201 A018202
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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