%I #6 Apr 20 2020 19:45:19

%S 1,8,51,1015,8917,343145,3696933,330654951,4301737251,1093232460925

%N Number of n X n 0..1 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.

%C Diagonal of A267644.

%e Some solutions for n=5

%e ..0..1..0..1..0....0..1..0..1..0....0..1..0..1..0....0..1..1..0..1

%e ..1..0..1..0..0....0..1..1..0..0....1..0..0..1..1....1..0..1..0..1

%e ..1..0..0..1..1....1..0..1..0..1....0..1..1..0..0....0..1..0..1..0

%e ..0..1..0..0..1....0..1..0..1..1....0..1..0..0..1....1..0..1..1..0

%e ..1..0..1..0..0....1..0..1..1..0....1..0..1..1..0....1..1..0..0..1

%Y Cf. A267644.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 18 2016