%I #6 Apr 05 2020 23:37:04
%S 0,0,1,10,60,304,1420,6312,27167,114412,474563,1947098,7925708,
%T 32072580,129213082,518818124,2077775396,8304424080,33138971978,
%U 132078954532,525904271587,2092410377864,8320012474033,33066905278394,131371155380369
%N Number of n X 2 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 Column 2 of A293087.
%H R. H. Hardin, <a href="/A293081/b293081.txt">Table of n, a(n) for n = 1..210</a>
%e All solutions for n=4
%e ..0..1. .1..0. .0..0. .0..1. .0..1. .0..1. .0..1. .0..1. .0..0. .0..0
%e ..0..0. .0..1. .1..0. .0..0. .0..0. .0..0. .0..1. .0..0. .1..0. .0..1
%e ..1..0. .0..0. .0..0. .0..1. .1..0. .1..0. .0..0. .0..0. .0..1. .0..0
%e ..1..0. .1..0. .1..0. .0..0. .0..0. .0..1. .1..0. .1..0. .0..0. .1..0
%Y Cf. A293087.
%K nonn
%O 1,4
%A _R. H. Hardin_, Sep 30 2017
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