A152365 Number of permutations of floor(i*9/4), i=0..n-1, with all sums of 5 adjacent terms unique.

1, 2, 6, 24, 120, 720, 4608, 33984, 288144, 2623296, 25738160, 286187056, 3468902852, 44081906430, 594869073736, 8691649361022

Offset

1,2

Links

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

Crossrefs

Sequence in context: A147743 A152353 A152357 * A147742 A152352 A152360

Adjacent sequences: A152362 A152363 A152364 * A152366 A152367 A152368

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved