154703688domain: NAppears in sequencesNumber A(n,k) of k-partite partitions of {n}^k into k-tuples; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=48A219727Number of (3*n) X n matrices with nonnegative integer entries and each column sum being 3 up to permutation of rows.at n=6A322487