A222954 - OEIS

A222954

Number of n X n 0..1 arrays with every row and column least squares fitting to a zero slope straight line, with a single point array taken as having zero slope.

%I #17 Oct 17 2020 04:24:39

%S 2,2,16,16,512,512,323600,144930,1808243216,615667968

%N Number of n X n 0..1 arrays with every row and column least squares fitting to a zero slope straight line, with a single point array taken as having zero slope.

%e Some solutions for n=4

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

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

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

%Y Main diagonal of A222959.

%K nonn,more

%O 1,1

%A _R. H. Hardin_, Mar 10 2013