A147730 Number of permutations of 1..n with all sums of 2 through 8 adjacent terms respectively unique.

1, 2, 6, 16, 54, 232, 936, 3880, 17302, 81584, 409012, 2138674, 11754832, 66857094, 395646912, 2409911234, 15175510148

Offset

1,2

Links

Table of n, a(n) for n=1..17.

Crossrefs

Sequence in context: A241066 A045696 A150028 * A147729 A147728 A147727

Adjacent sequences: A147727 A147728 A147729 * A147731 A147732 A147733

Keyword

nonn

Author

R. H. Hardin, Nov 11 2008

Status

approved