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A018203
Possible numbers of complements of topologies on 12 points.
0
1, 11, 100, 729, 2047, 4096
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..5.
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:
A288047
A001738
A120655
*
A081906
A098296
A037542
Adjacent sequences:
A018200
A018201
A018202
*
A018204
A018205
A018206
KEYWORD
nonn
,
more
AUTHOR
N. J. A. Sloane
STATUS
approved
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Last modified April 23 02:23 EDT 2024. Contains 371906 sequences. (Running on oeis4.)