135029200594domain: NAppears in sequencesThe number of six-fold coverings of a set.at n=6A165437Number of (n^2) X n binary arrays with rows in nonincreasing order and n ones in every column.at n=5A188388Number of (6*n) X 6 binary arrays with rows in nonincreasing order and n ones in every column.at n=5A188390