1376095domain: NAppears in sequencesNumber of n X 3 0..2 arrays with row sums 3 and column sums n.at n=9A172634Number of n X 9 0..2 arrays with row sums 9 and column sums n.at n=2A172641Number of 3*n X n 0..2 arrays with row sums 3 and column sums 9.at n=2A172669Duplicate of A172634.at n=9A208446