References to A038718

Number of permutations P of {1,2,...,n} such that P(1)=1 and |P^-1(i+1)-P^-1(i)| equals 1 or 2 for i=1,2,...,n-1.
1, 1, 2, 4, 6, 9, 14, 21, 31, 46, 68, 100, 147, 216, 317, 465, 682, 1000, 1466, 2149


2 seqfan posts

Sat Oct 16 16:03:42 CEST 2010    [seqfan] Re: Penney's game sequences
Fri Oct 15 22:21:32 CEST 2010    [seqfan] Penney's game sequences

Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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