Number of n X n (0,1)-matrices such that there is a row and a column with equal sums.
A266501
Number of n X n (0,1)-matrices such that there is a row and a column with equal sums.
Terms
- a(0) =1a(1) =2a(2) =12a(3) =500a(4) =63828a(5) =33394572a(6) =68548156212
External references
- oeis: A266501