276288domain: NAppears in sequencesNumber of permutations of floor(i*5/2), i=0..n-1, with all sums of 5 adjacent terms unique.at n=8A152353Number of permutations of floor(i*7/2), i=0..n-1, with all sums of 5 adjacent terms unique.at n=8A152357E.g.f.: A(x) = Series_Reversion[ x - Sum_{n>=2} (-x)^n/(n(n-1)/2) ].at n=6A180715