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A147729 Number of permutations of 1..n with all sums of 2 through 7 adjacent terms respectively unique. 0
1, 2, 6, 16, 54, 232, 936, 3880, 17302, 81584, 409012, 2138674, 11754832, 66857094, 395646912, 2421309886, 15276353934 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..17.

CROSSREFS

Sequence in context: A045696 A150028 A147730 * A147728 A147727 A147726

Adjacent sequences:  A147726 A147727 A147728 * A147730 A147731 A147732

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 11 2008

STATUS

approved

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Last modified October 16 05:13 EDT 2021. Contains 348035 sequences. (Running on oeis4.)