If n = 4u2 is the order of a regular Hadamard matrix, then the excess is ±8u3 and the row and column sums all equal ±2u. It follows that each row has 2u2 ± u positive entries and 2u2 ∓ u negative entries.
If n = 4u2 is the order of a regular Hadamard matrix, then the surplus is ±8u3 and the row and column sums all equal ±2u. Consequently, each row has 2u2 ± u positive entries and 2u2 ∓ u negative entries.