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).
A318951
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).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =4a(8) =3a(9) =1a(10) =1a(11) =6a(12) =14a(13) =5a(14) =1a(15) =1a(16) =9a(17) =44a(18) =53a(19) =7a(20) =1a(21) =1a(22) =12a(23) =129a(24) =458a(25) =198a(26) =11a(27) =1a(28) =1a(29) =16
External references
- oeis: A318951