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A147913 Number of permutations of floor(i*7/6), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique. 0
1, 2, 6, 16, 54, 232, 1194, 5348, 28874, 153508, 823908, 4528784, 31785252, 218092306, 1562069462, 11268454920 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..16.

CROSSREFS

Sequence in context: A091217 A147891 A147922 * A147904 A147896 A147888

Adjacent sequences:  A147910 A147911 A147912 * A147914 A147915 A147916

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified May 26 04:43 EDT 2022. Contains 354074 sequences. (Running on oeis4.)