Number of binary matrices with nonzero rows, a total of n ones and distinct columns each with the same number of ones and columns in decreasing lexicographic order.
A331639
Number of binary matrices with nonzero rows, a total of n ones and distinct columns each with the same number of ones and columns in decreasing lexicographic order.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =8a(4) =2a(5) =95a(6) =2a(7) =1062a(8) =2651a(9) =17667a(10) =2a(11) =946585a(12) =2a(13) =10422801a(14) =126470568a(15) =555727036a(16) =2a(17) =61345560608a(18) =2a(22) =2a(28) =2
External references
- oeis: A331639