%I #7 Feb 21 2025 15:20:12
%S 1,7,93,3617,372560,104434119,80311501599,170240798669115,
%T 992546861505827096,15854777538297903063593
%N Unchanging value maps: number of n X n binary arrays indicating the locations of corresponding elements unequal to no horizontal or antidiagonal neighbor in a random 0..2 n X n array.
%C Diagonal of A219421.
%e Some solutions for n=3
%e ..1..1..0....0..0..0....1..1..0....0..0..1....0..0..0....0..0..1....0..0..0
%e ..0..0..0....0..1..0....0..0..0....1..1..1....1..0..1....0..0..1....1..0..1
%e ..1..0..1....0..0..1....0..1..1....1..0..0....1..1..1....1..0..0....0..0..0
%Y Cf. A219421.
%K nonn,changed
%O 1,2
%A _R. H. Hardin_, Nov 19 2012