127126912domain: NAppears in sequencesNumber of quad-coverings of a set.at n=6A165435Number of (6*n) X 6 binary arrays with rows in nonincreasing order and n ones in every column.at n=3A188390T(n,k) = number of (n*k) X k binary arrays with rows in nonincreasing order and n ones in every column.at n=39A188392