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%I #4 Feb 25 2018 06:10:10
%S 2,52,226,1041,5526,29439,150416,781647,4082439,21222937,110388099,
%T 574756967,2991427381,15568650875,81036181631,421794216427,
%U 2195417598827,11427201537107,59479013183583,309590293053773,1611431130841749
%N Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.
%C Column 4 of A300108.
%H R. H. Hardin, <a href="/A300104/b300104.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A300104/a300104.txt">Empirical recurrence of order 67</a>
%F Empirical recurrence of order 67 (see link above)
%e Some solutions for n=5
%e ..0..1..0..0. .0..1..0..0. .0..0..1..0. .0..0..0..1. .0..0..1..1
%e ..1..0..1..0. .0..0..1..1. .1..0..1..0. .0..0..0..1. .0..1..0..0
%e ..1..1..1..0. .0..1..0..0. .1..0..1..0. .1..1..0..0. .1..0..0..0
%e ..0..0..1..0. .1..0..0..0. .1..0..1..0. .1..0..1..0. .1..0..0..0
%e ..0..1..0..0. .1..0..0..0. .1..0..1..0. .1..0..1..1. .1..0..0..0
%Y Cf. A300108.
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 25 2018
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