537001197

Appears in sequences

• Number of 6 X 6 matrices with nonnegative integer entries and all row sums equal to n, up to row and column permutation.at n=5A058392
• Array read by rows: T(n,k) is the number of nonisomorphic n X n matrices with nonnegative integer entries and row sums k under row and column permutations, (n >= 1, k >= 0).at n=60A318951