A152377 Number of permutations of floor(i*7/3), i=0..n-1, with all sums of 6 adjacent terms unique.

1, 2, 6, 24, 120, 720, 5040, 37632, 312720, 2928672, 29194352, 315087264, 3878232192, 49932588816, 690855465036, 10302466047492

Offset

1,2

Links

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

Crossrefs

Sequence in context: A147736 A147741 A152379 * A152382 A152378 A152373

Adjacent sequences: A152374 A152375 A152376 * A152378 A152379 A152380

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved