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A147927 Number of permutations of floor(i*6/5), i=0..n-1, with all sums of two and three adjacent terms respectively unique. 0
1, 2, 6, 16, 54, 260, 1236, 6360, 34730, 192782, 1393166, 9882056, 75731318, 596396100, 4939024062, 49565770888 (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: A147888 A147945 A147936 * A147919 A320805 A354083

Adjacent sequences:  A147924 A147925 A147926 * A147928 A147929 A147930

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified June 27 04:16 EDT 2022. Contains 354888 sequences. (Running on oeis4.)