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A046873
Number of total orders extending inclusion on P({1,...,n}).
+0
2
1, 1, 2, 48, 1680384, 14807804035657359360
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.
AT&T Labs Research
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