Number of permutations satisfying i-3<=p(i)<=i+4, i=1..n.
1, 2, 6, 24, 96, 330, 1066, 3451, 11581, 39264, 132784, 446460, 1497108, 5023696
5 seqfan posts
Wed Jun 30 13:24:07 CEST 2010 [seqfan] Re: b-files for apparently matching sequences?
Wed Jun 30 13:07:48 CEST 2010 [seqfan] Re: b-files for apparently matching sequences?
Wed Jun 30 10:34:44 CEST 2010 [seqfan] Re: b-files for apparently matching sequences?
Tue Jun 29 18:08:01 CEST 2010 [seqfan] Re: b-files for apparently matching sequences?
Tue Jun 29 17:22:49 CEST 2010 [seqfan] b-files for apparently matching sequences?
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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