10520010domain: NAppears in sequencesNumber T(n,m) of n X m matrices over {0,1,2} with all row and column sums equal to 1 or 2, m=0,..,2*n.at n=42A062154Number of n X n matrices over {0,1,2} with all row and column sums equal to 1 or 2.at n=6A062156