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A003425
n! times number of posets with n elements.
(Formerly M4294)
+0
1
1, 1, 6, 114, 5256, 507720, 93616560, 30894489360, 17407086641280, 16152167106391680, 23990233574783750400, 55735096448700749203200
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.
AT&T Labs Research
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