1609727

Appears in sequences

• Number of ways to put n red, n blue, and n green balls into n indistinguishable boxes.at n=7A254811
• Number A(n,k) of factorizations of m^n into at most n factors, where m is a product of exactly k distinct primes; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=62A256384