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%I #4 Mar 22 2018 11:57:38
%S 21,11,479,7454,164346,3243936,62812639,1238986634,24457707005,
%T 482452924004,9513853529766,187654670406304,3701674082495411,
%U 73020138987377115,1440418791247373580,28414387585128502031
%N Number of nX7 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
%C Column 7 of A301498.
%H R. H. Hardin, <a href="/A301497/b301497.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0..1..1..0..1..1. .0..1..0..1..0..0..1. .0..1..0..0..0..0..0
%e ..1..1..1..1..1..1..1. .0..1..0..1..1..1..0. .0..0..0..0..1..0..0
%e ..0..0..0..0..1..1..1. .1..1..1..0..1..1..1. .0..0..0..0..1..0..0
%e ..1..0..0..0..0..0..1. .1..1..1..1..1..1..1. .1..1..0..0..0..0..1
%e ..0..1..1..0..0..0..0. .0..0..1..1..1..1..0. .0..0..0..1..0..0..0
%Y Cf. A301498.
%K nonn
%O 1,1
%A _R. H. Hardin_, Mar 22 2018