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%I #6 Apr 05 2020 23:14:32
%S 0,12,113,820,5773,41620,305641,2274080,17114289,129576988,987231526,
%T 7551235806,57992581744,446683948074,3450295188177,26710836161850,
%U 207217760171898,1610393410029550,12535446041119817,97715224210141008
%N Number of 3 X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.
%C Row 3 of A285152.
%H R. H. Hardin, <a href="/A285154/b285154.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..1..1..1..1. .0..0..1..0. .1..0..1..0. .0..1..1..0. .0..1..0..0
%e ..1..1..1..0. .1..0..1..0. .0..1..1..1. .0..0..1..1. .1..1..0..0
%e ..0..0..0..1. .0..1..1..0. .0..0..0..0. .0..1..1..0. .1..0..1..1
%Y Cf. A285152.
%K nonn
%O 1,2
%A _R. H. Hardin_, Apr 12 2017
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