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A234268
Number of convex topologies on an n-point totally ordered set.
0
1, 4, 21, 129, 876, 6376, 48829, 388771, 3191849, 26864936
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..10.
Tyler Clark and Tom Richmond,
The Number of Convex Topologies on a Finite Totally Ordered Set
, 2013, Involve, Vol. 8 (2015), No. 1, 25-32.
CROSSREFS
Cf.
A000798
,
A007052
.
Sequence in context:
A300674
A371430
A232956
*
A111177
A141052
A058308
Adjacent sequences:
A234265
A234266
A234267
*
A234269
A234270
A234271
KEYWORD
nonn
,
more
AUTHOR
N. J. A. Sloane
, Dec 24 2013
STATUS
approved
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Last modified June 6 09:31 EDT 2024. Contains 373119 sequences. (Running on oeis4.)