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%I #4 Aug 12 2018 19:45:47
%S 64,700,4495,37030,304184,2495323,20241433,163342483,1322465254,
%T 10749863872,87367578925,711940702703,5803066729053,47351790800795,
%U 386468872771749,3155746216467970,25773145361237488,210537089088168161
%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
%C Column 7 of A318024.
%H R. H. Hardin, <a href="/A318023/b318023.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0..0..1..1..0..1. .0..1..1..1..0..1..1. .0..0..0..1..0..0..0
%e ..0..0..0..1..1..1..1. .0..1..1..1..1..1..1. .0..0..0..0..1..1..0
%e ..0..0..0..1..1..1..1. .0..1..1..1..1..1..1. .0..1..0..0..1..0..0
%e ..1..1..1..1..1..1..0. .0..1..1..1..1..1..0. .1..1..0..0..0..0..1
%e ..1..1..0..1..1..1..1. .0..1..1..0..1..0..0. .0..0..0..1..0..0..0
%Y Cf. A318024.
%K nonn
%O 1,1
%A _R. H. Hardin_, Aug 12 2018