624889domain: NAppears in sequencesNumber of multigraphs on n labeled edges (without loops).at n=7A020554Number of (7*n) X 7 binary arrays with rows in nonincreasing order and n ones in every column.at n=1A188391T(n,k) = number of (n*k) X k binary arrays with rows in nonincreasing order and n ones in every column.at n=29A188392