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A018199
Possible numbers of complements of topologies on 8 points.
0
1, 7, 36, 64, 125, 127, 243, 256
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..7.
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.
CROSSREFS
Sequence in context:
A028389
A041603
A176543
*
A063168
A163683
A103090
Adjacent sequences:
A018196
A018197
A018198
*
A018200
A018201
A018202
KEYWORD
nonn
,
more
AUTHOR
N. J. A. Sloane
STATUS
approved
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Last modified June 1 02:53 EDT 2024. Contains 373008 sequences. (Running on oeis4.)