A152371 Number of permutations of floor(i*4/3), i=0..n-1, with all sums of 6 adjacent terms unique.

1, 2, 6, 24, 120, 720, 5040, 37440, 302904, 2726112, 26365920, 273394368, 3164750932, 39740431124, 519398101404, 7365104960768

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152372 A152376 A152384 * A152386 A147736 A147741

Adjacent sequences: A152368 A152369 A152370 * A152372 A152373 A152374

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved