85820809
domain: N
Appears in sequences
- Number of nonisomorphic binary n X n matrices with four 1's per column under row and column permutations.at n=5A247597
- Number of nonisomorphic binary n X n matrices with five 1's per column under row and column permutations.at n=4A247598
- Triangle read by rows: T(n,k) is the number of nonisomorphic binary n X n matrices with k 1's per column under row and column permutations.at n=49A304942
- Triangle read by rows: T(n,k) is the number of nonisomorphic binary n X n matrices with k 1's per column under row and column permutations.at n=50A304942