A152367 Number of permutations of floor(i*9/7), i=0..n-1, with all sums of 5 adjacent terms unique.

1, 2, 6, 24, 120, 720, 4560, 32784, 259824, 2204160, 21539248, 227702704, 2544178072, 30616778318, 399978020816, 5508746017082

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152361 A152356 A152355 * A152351 A147745 A147744

Adjacent sequences: A152364 A152365 A152366 * A152368 A152369 A152370

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved