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A147728 Number of permutations of 1..n with all sums of 2 through 6 adjacent terms respectively unique. 1
1, 2, 6, 16, 54, 232, 936, 3880, 17302, 81584, 409012, 2138674, 11754832, 66857094, 399774882, 2469567300, 15804526682 (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: A150028 A147730 A147729 * A147727 A147726 A147916

Adjacent sequences:  A147725 A147726 A147727 * A147729 A147730 A147731

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 11 2008

STATUS

approved

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Last modified October 24 02:02 EDT 2021. Contains 348217 sequences. (Running on oeis4.)