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A147921 Number of permutations of floor(i*7/5), i=0..n-1, with all sums of two adjacent terms unique. 0
1, 2, 6, 24, 74, 372, 2116, 13376, 91944, 651888, 5780164, 51776784, 517517604, 5477813312, 59576133472, 755631632616 (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: A147947 A147938 A147929 * A263712 A263698 A263747

Adjacent sequences:  A147918 A147919 A147920 * A147922 A147923 A147924

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2008

STATUS

approved

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Last modified July 6 02:58 EDT 2022. Contains 355108 sequences. (Running on oeis4.)