A152631 - OEIS

A152631

Number of permutations of floor(i*5/2), i=0..n-1, with all sums of 7 adjacent terms unique.

%I #5 Apr 07 2021 20:15:55

%S 1,2,6,24,120,720,5040,40320,339840,3151872,31926528,352423488,

%T 4218592000,54510747424,758539165904,11240098648736

%N Number of permutations of floor(i*5/2), i=0..n-1, with all sums of 7 adjacent terms unique.

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 10 2008