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A147919 Number of permutations of floor(i*6/5), i=0..n-1, with all sums of two adjacent terms unique. 0
1, 2, 6, 16, 54, 300, 1508, 9488, 58680, 406376, 3576988, 30865472, 296769186, 2879354420, 30206726508, 369524784820 (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: A147945 A147936 A147927 * A320805 A150029 A221841

Adjacent sequences:  A147916 A147917 A147918 * A147920 A147921 A147922

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified May 22 23:18 EDT 2022. Contains 353959 sequences. (Running on oeis4.)