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.

A304942

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.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =3a(8) =3a(9) =1a(10) =1a(11) =5a(12) =11a(13) =5a(14) =1a(15) =1a(16) =7a(17) =35a(18) =35a(19) =7a(20) =1a(21) =1a(22) =11a(23) =132a(24) =410a(25) =132a(26) =11a(27) =1a(28) =1a(29) =15

External references