A152372 Number of permutations of floor(i*5/2), i=0..n-1, with all sums of 6 adjacent terms unique.

1, 2, 6, 24, 120, 720, 5040, 37248, 311256, 2830368, 28685456, 307302656, 3744207972, 48232689632, 668100774772, 9819878376880

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152374 A152375 A152370 * A152376 A152384 A152371

Adjacent sequences: A152369 A152370 A152371 * A152373 A152374 A152375

Keyword

nonn

Author

R. H. Hardin, Dec 02 2008

Status

approved