Number of permutations of {1,2,...,n} where adjacent elements differ in value by 3 or more.
1, 0, 0, 0, 0, 2, 32, 368, 3984, 44304, 521606, 6564318, 88422296, 1272704694
4 seqfan posts
Thu Jul 1 15:50:15 CEST 2010 [seqfan] Re: A127697: correct list(?)
Thu Jul 1 14:52:40 CEST 2010 [seqfan] Re: A127697: correct list(?)
Thu Jul 1 14:39:35 CEST 2010 [seqfan] Re: A127697: correct list(?)
Thu Jul 1 14:06:35 CEST 2010 [seqfan] A127697: correct list(?)
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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