A147919 Number of permutations of floor(i*6/5), i=0..n-1, with all sums of two adjacent terms unique.

1, 2, 6, 16, 54, 300, 1508, 9488, 58680, 406376, 3576988, 30865472, 296769186, 2879354420, 30206726508, 369524784820

Offset

1,2

Links

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

Crossrefs

Sequence in context: A147945 A147936 A147927 * A320805 A354083 A150029

Adjacent sequences: A147916 A147917 A147918 * A147920 A147921 A147922

Keyword

nonn

Author

R. H. Hardin, Nov 17 2008

Status

approved