Bell or exponential numbers: ways of placing n labeled balls into n indistinguishable boxes.
1, 1, 2, 5, 15, 52, 203, 877, 4140, 21147, 115975, 678570, 4213597, 27644437
Index of A-numbers in seqfan: by ascending order
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19 seqfan posts
Wed Jul 25 16:48:09 CEST 2012 [seqfan] Re: collapsing permutations to mere Set Partitions(longish)
Wed Jul 25 14:37:17 CEST 2012 [seqfan] Re: collapsing permutations to mere Set Partitions (longish)
Wed Jul 25 10:34:45 CEST 2012 [seqfan] collapsing permutations to mere Set Partitions (longish)
Fri May 18 09:35:17 CEST 2012 [seqfan] Counting factorizations: A001055 and friends
Tue Mar 20 22:36:09 CET 2012 [seqfan] Prove formula?
Tue Jan 25 01:02:46 CET 2011 [seqfan] Re: Inequivalent ways C_n of coloring a strip of n+1 boxes (...)
Fri Jan 21 16:10:26 CET 2011 [seqfan] Re: Inequivalent ways C_n of coloring a strip of n+1 boxes (...)
Fri Jan 21 07:42:19 CET 2011 [seqfan] Re: Inequivalent ways C_n of coloring a strip of n+1 boxes (...)
Fri Oct 29 05:35:16 CEST 2010 [seqfan] Implementing first 500 sequences in Java
Fri Oct 22 08:51:50 CEST 2010 [seqfan] Binary counter with random bits
Sun May 30 14:01:04 CEST 2010 [seqfan] Re Concordance to "What's Special About This Number?"
Thu Apr 15 18:49:13 CEST 2010 [seqfan] Re: conjectured EGF and extension of A086365 and others
Thu Apr 15 17:34:39 CEST 2010 [seqfan] conjectured EGF and extension of A086365 and others
Fri Mar 26 23:29:32 CET 2010 [seqfan] Re: Sequences for Orderings
Mon Oct 26 12:03:22 CET 2009 [seqfan] Re: A metric and UI for Pandora-like OEIS exploration
Mon Oct 26 11:03:39 CET 2009 [seqfan] A metric and UI for Pandora-like OEIS exploration
Mon Oct 26 09:36:25 CET 2009 [seqfan] A metric and UI for Pandora-like OEIS exploration
Mon Jun 8 05:50:00 CEST 2009 [seqfan] Re: perms and set partitions
Mon Jun 8 04:00:16 CEST 2009 [seqfan] perms and set partitions
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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