%I #6 Apr 05 2020 22:45:39
%S 33,1746,163708,17538010,1970768869,227677212684,26772321109067,
%T 3187484402643589,383012404461341362,46352294274050867321,
%U 5641487492728040767503,689803988820235909398592
%N Number of n X 7 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.
%C Column 7 of A284222.
%H R. H. Hardin, <a href="/A284221/b284221.txt">Table of n, a(n) for n = 1..97</a>
%e Some solutions for n=3
%e ..0..1..0..1..1..0..1. .0..1..0..1..1..1..0. .0..1..1..1..0..1..0
%e ..0..0..1..1..1..1..0. .1..0..0..0..0..1..1. .0..0..1..0..1..1..0
%e ..0..0..0..1..0..0..1. .0..1..1..0..1..1..1. .1..1..1..0..0..0..0
%Y Cf. A284222.
%K nonn
%O 1,1
%A _R. H. Hardin_, Mar 23 2017
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