Number of "sets of lists": number of partitions of {1,..,n} into any number of lists, where a list means an ordered subset.
1, 1, 3, 13, 73, 501, 4051, 37633, 394353, 4596553, 58941091, 824073141
5 seqfan posts
Sun Jan 16 17:51:48 CET 2011 [seqfan] Re: A002875 Sorting numbers
Sun Jan 16 15:51:56 CET 2011 [seqfan] Re: A002875 Sorting numbers
Fri Oct 29 05:35:16 CEST 2010 [seqfan] Implementing first 500 sequences in Java
Wed Feb 24 17:39:35 CET 2010 [seqfan] Re: article by Paul Taurau on bijections to naturals
Wed Feb 24 17:39:35 CET 2010 [seqfan] Re: article by Paul Taurau on bijections to naturals
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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