A147948 Number of permutations of floor(i*8/3), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique.

1, 2, 6, 24, 96, 376, 2214, 13736, 74156, 544746, 4324788, 30292498, 269800764, 2608556020, 21489980046, 228274108362

Offset

1,2

Links

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

Crossrefs

Sequence in context: A147944 A147935 A147926 * A147939 A147930 A147918

Adjacent sequences: A147945 A147946 A147947 * A147949 A147950 A147951

Keyword

nonn

Author

R. H. Hardin, Nov 17 2008

Status

approved