%I #7 Apr 05 2020 23:36:13
%S 0,0,53,8108,3786544,6736259130,48001754870966,1383438455350705382,
%T 161312497547006248372814,76023645347398961263283802334,
%U 144620752785016707502340606159808938
%N Number of n X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.
%C Diagonal of A293087.
%H R. H. Hardin, <a href="/A293080/b293080.txt">Table of n, a(n) for n = 1..12</a>
%e Some solutions for n=4
%e ..1..1..1..0. .0..0..0..0. .0..1..1..0. .1..1..0..0. .0..1..1..0
%e ..0..1..1..0. .1..1..0..0. .0..0..1..1. .1..0..1..1. .0..0..0..1
%e ..0..0..1..0. .0..0..0..1. .0..0..0..1. .0..1..1..0. .1..0..0..1
%e ..0..0..0..1. .0..0..1..1. .0..0..1..0. .0..0..1..0. .0..1..1..0
%Y Cf. A293087.
%K nonn
%O 1,3
%A _R. H. Hardin_, Sep 30 2017
|