%I #4 Mar 27 2018 14:30:45
%S 64,2778,72514,1986213,54948498,1518341751,41966406867,1159968653556,
%T 32062561937804,886245421510973,24496909108346419,677125561489883191,
%U 18716618615716379268,517351460289528901541,14300262505893118372023
%N Number of nX7 0..1 arrays with every element equal to 0, 1 or 2 horizontally or antidiagonally adjacent elements, with upper left element zero.
%C Column 7 of A301841.
%H R. H. Hardin, <a href="/A301840/b301840.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A301840/a301840.txt">Empirical recurrence of order 53</a>
%F Empirical recurrence of order 53 (see link above)
%e Some solutions for n=5
%e ..0..0..1..0..0..1..0. .0..0..1..0..0..1..0. .0..0..1..0..0..1..1
%e ..0..0..1..0..1..1..0. .0..0..1..0..0..1..1. .0..0..1..0..0..0..1
%e ..0..0..1..0..0..1..0. .0..0..1..0..1..0..0. .0..0..1..1..1..1..0
%e ..0..1..0..0..1..1..0. .1..0..0..1..0..1..1. .1..1..0..0..0..1..1
%e ..0..1..1..0..1..0..1. .1..1..0..1..0..1..1. .0..1..1..0..0..0..0
%Y Cf. A301841.
%K nonn
%O 1,1
%A _R. H. Hardin_, Mar 27 2018
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