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A147947 Number of permutations of floor(i*7/5), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique. 0
1, 2, 6, 24, 74, 372, 1764, 9076, 51988, 292392, 1967338, 12930510, 91859738, 702084750, 5271114798, 46825411464 (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: A147937 A147928 A147920 * A147938 A147929 A147921

Adjacent sequences:  A147944 A147945 A147946 * A147948 A147949 A147950

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified June 27 11:25 EDT 2022. Contains 354896 sequences. (Running on oeis4.)