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A147945 Number of permutations of floor(i*6/5), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique. 0
1, 2, 6, 16, 54, 260, 1236, 6360, 31636, 159064, 1028418, 6241800, 40763772, 268393912, 1814067010, 14763664426 (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: A147904 A147896 A147888 * A147936 A147927 A147919

Adjacent sequences:  A147942 A147943 A147944 * A147946 A147947 A147948

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified May 21 10:21 EDT 2022. Contains 353908 sequences. (Running on oeis4.)