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A058259
Number of split semiorders on n points.
2
1, 2, 5, 16, 61, 279, 1491, 9267, 66447, 545173
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..10.
P. C. Fishburn and J. A. Reeds,
Counting split semiorders
, Order, 18(2): 119-128, 2001.
CROSSREFS
Cf.
A000111
,
A058260
.
Sequence in context:
A346838
A000111
A007976
*
A361920
A368318
A369400
Adjacent sequences:
A058256
A058257
A058258
*
A058260
A058261
A058262
KEYWORD
nonn
,
hard
,
more
,
nice
AUTHOR
N. J. A. Sloane
, Dec 06 2000
STATUS
approved
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Last modified August 19 20:07 EDT 2024. Contains 375310 sequences. (Running on oeis4.)