A152638 Number of permutations of floor(i*7/5), i=0..n-1, with all sums of 7 adjacent terms unique.

1, 2, 6, 24, 120, 720, 5040, 40320, 341760, 3129408, 31267872, 336706304, 3892760640, 48256123072, 654140524488, 9444036425220

Offset

1,2

Links

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

Crossrefs

Sequence in context: A152631 A152635 A152643 * A152636 A152632 A152640

Adjacent sequences: A152635 A152636 A152637 * A152639 A152640 A152641

Keyword

nonn,more

Author

R. H. Hardin, Dec 10 2008

Status

approved