A152384 Number of permutations of floor(i*9/4), i=0..n-1, with all sums of 6 adjacent terms unique.

1, 2, 6, 24, 120, 720, 5040, 37248, 319512, 2918016, 29152160, 314633376, 3963157656, 50343312444, 685581994146, 10100992141840

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152370 A152372 A152376 * A152371 A152386 A147736

Adjacent sequences: A152381 A152382 A152383 * A152385 A152386 A152387

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved