A147918 Number of permutations of floor(i*5/3), i=0..n-1, with all sums of two adjacent terms unique.

1, 2, 6, 24, 96, 376, 2434, 16728, 99960, 838244, 7723320, 62801352, 674514660, 7865976872, 80727212972, 1056425822904

Offset

1,2

Links

Table of n, a(n) for n=1..16.

Crossrefs

Sequence in context: A147948 A147939 A147930 * A072855 A179341 A179345

Adjacent sequences: A147915 A147916 A147917 * A147919 A147920 A147921

Keyword

nonn

Author

R. H. Hardin, Nov 17 2008

Status

approved