379997096domain: NAppears in sequencesNumber of arrangements of n+1 nonzero numbers x(i) in -6..6 with the sum of trunc(x(i)/x(i+1)) equal to zero.at n=7A189542Number of arrangements of 9 nonzero numbers x(i) in -n..n with the sum of trunc(x(i)/x(i+1)) equal to zero.at n=5A189552