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⇱ The On-Line Encyclopedia of Integer Sequences (OEIS)

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Showing entries 1-10 | older changes
Number of 7-element ordered T_0-antichains on an unlabeled n-set; T_1-hypergraphs on 7 labeled nodes with n (not necessarily empty) distinct hyperedges (n=0,1,...,128).
#12 by Alois P. Heinz at Sun Jan 29 19:19:54 EST 2023
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#11 by Jon E. Schoenfield at Sun Jan 29 18:42:53 EST 2023
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#10 by Jon E. Schoenfield at Sun Jan 29 18:42:51 EST 2023
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#9 by Michael De Vlieger at Sat Sep 10 22:02:21 EDT 2022
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#8 by Sean A. Irvine at Sat Sep 10 21:10:10 EDT 2022
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#7 by Sean A. Irvine at Sat Sep 10 21:10:04 EDT 2022
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#6 by R. J. Mathar at Thu Jun 13 14:48:39 EDT 2013
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#5 by R. J. Mathar at Thu Jun 13 14:48:35 EDT 2013
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#4 by N. J. A. Sloane at Tue Jun 01 03:00:00 EDT 2010
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#3 by N. J. A. Sloane at Fri Feb 24 03:00:00 EST 2006
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