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%I #6 Apr 06 2020 00:39:23
%S 0,0,48,8088,3125547,5589631828,38469698642410,1110306381675662688
%N Number of n X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.
%C Diagonal of A293100.
%e Some solutions for n=4
%e ..1..1..1..0. .0..0..0..0. .0..0..0..0. .1..1..0..1. .1..1..0..1
%e ..0..1..0..1. .1..1..1..0. .0..0..0..1. .0..0..0..0. .0..0..1..0
%e ..0..0..0..0. .1..0..0..0. .1..0..0..1. .0..1..1..0. .1..0..0..0
%e ..0..0..1..1. .0..1..1..1. .1..0..1..0. .1..0..1..0. .0..0..0..0
%Y Cf. A293100.
%K nonn
%O 1,3
%A _R. H. Hardin_, Sep 30 2017
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