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A000608
Number of connected partially ordered sets with n unlabeled elements.
(Formerly M2864 N1152)
+0
5
1, 1, 1, 3, 10, 44, 238, 1650, 14512, 163341, 2360719, 43944974, 1055019099, 32664984238, 1303143553205, 66900392672168, 4413439778321689
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 6 11:04 EST 2009. Contains 170427 sequences.
AT&T Labs Research
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