%I

%S 1,2,6,24,120,720,5040,40320,343680,3210336,32428512,359501856,

%T 4409024192,56394389456,777561149096,11557514999280

%N Number of permutations of floor(i*9/4), i=0..n-1, with all sums of 7 adjacent terms unique.

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 10 2008