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%I #6 Apr 05 2020 23:22:18
%S 0,52,550,8544,119506,1729212,25450414,379892924,5724356600,
%T 86870686676,1325147534394,20298649626624,312012262489322,
%U 4809932665481580,74334215199171600,1151283153187656576,17865166558629037394
%N Number of 4 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.
%C Row 4 of A285750.
%H R. H. Hardin, <a href="/A285753/b285753.txt">Table of n, a(n) for n = 1..130</a>
%e Some solutions for n=4
%e ..0..0..1..1. .1..0..0..1. .1..1..0..0. .0..0..0..0. .1..1..0..0
%e ..0..0..1..1. .0..1..1..0. .0..1..0..0. .1..0..0..1. .1..0..1..1
%e ..1..0..0..0. .1..0..0..1. .0..1..0..0. .1..1..0..0. .0..1..0..0
%e ..0..1..0..1. .0..0..0..1. .1..1..0..1. .1..1..1..0. .0..1..0..0
%Y Cf. A285750.
%K nonn
%O 1,2
%A _R. H. Hardin_, Apr 25 2017
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