Number of nonnegative integer matrices with distinct nonzero rows, total sum n and columns with equal sums.
A331648
Number of nonnegative integer matrices with distinct nonzero rows, total sum n and columns with equal sums.
Terms
- a(0) =1a(1) =4a(2) =16a(3) =91a(4) =546a(5) =5094a(6) =47306a(7) =561190a(8) =7098943a(9) =103345704a(10) =1622632638a(11) =28216141886a(12) =526858348514
External references
- oeis: A331648