294384domain: NAppears in sequencesa(n) = n! * Sum_{k|n} (Sum_{j=1..k} 1/j); the k-sum is over the positive divisors, k, of n.at n=7A067710Number of permutations of floor(i*8/7), i=0..n-1, with all sums of 6 adjacent terms unique.at n=8A152383