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A147935 Number of permutations of floor(i*5/3), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique. 0
1, 2, 6, 24, 96, 376, 2062, 12092, 63082, 435476, 3164992, 22053858, 185988918, 1662793672, 13930931162, 141475507468 (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: A292984 A072854 A147944 * A147926 A147948 A147939

Adjacent sequences:  A147932 A147933 A147934 * A147936 A147937 A147938

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified July 2 21:48 EDT 2022. Contains 355029 sequences. (Running on oeis4.)