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A001831
Number of labeled graded partially ordered sets with n elements.
(Formerly M2956 N1194)
+0
13
1, 1, 3, 13, 87, 841, 11643, 227893, 6285807, 243593041, 13262556723, 1014466283293, 109128015915207, 16521353903210521, 3524056001906654763, 1059868947134489801413, 449831067019305308555487
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.
AT&T Labs Research
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