Number of binary matrices with nonzero rows, a total of n ones and each column with the same number of ones.
A331637
Number of binary matrices with nonzero rows, a total of n ones and each column with the same number of ones.
Terms
- a(0) =1a(1) =4a(2) =14a(3) =89a(4) =542a(5) =5156a(6) =47294a(7) =570074a(8) =7103343a(9) =104493608a(10) =1622632574a(11) =28411638982a(12) =526858348382
External references
- oeis: A331637