Triangle with number of equivalence classes of n X n matrices over {0,1} with rows and columns summing to k (0<=k<=n), where equivalence is defined by row and column permutations.
A133687
Triangle with number of equivalence classes of n X n matrices over {0,1} with rows and columns summing to k (0<=k<=n), where equivalence is defined by row and column permutations.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =1a(11) =1a(12) =2a(13) =1a(14) =1a(15) =1a(16) =1a(17) =2a(18) =2a(19) =1a(20) =1a(21) =1a(22) =1a(23) =4a(24) =7a(25) =4a(26) =1a(27) =1a(28) =1a(29) =1
External references
- oeis: A133687