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A147915 Number of permutations of floor(i*9/5), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique. 0
1, 2, 6, 24, 96, 444, 2508, 13216, 74772, 490758, 3432594, 29784866, 218746780, 1711675050, 14763495624, 145575514096 (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: A084509 A334767 A323260 * A147906 A147898 A147890

Adjacent sequences:  A147912 A147913 A147914 * A147916 A147917 A147918

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified May 21 14:16 EDT 2022. Contains 353909 sequences. (Running on oeis4.)