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Number of nX7 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1

%I #4 Apr 23 2018 10:40:59

%S 8,98,730,6322,160247,1716995,24386918,497878411,6748940959,

%T 106242067376,1858501096856,28169515094303,452053058478307,

%U 7483434704337764,118104298097496073,1903568189475537422,30951192368001440803

%N Number of nX7 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A303410.

%H R. H. Hardin, <a href="/A303409/b303409.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0..1..0..0..1..1..1. .0..0..1..1..0..1..0. .0..0..0..1..1..0..1

%e ..0..0..1..1..0..0..0. .1..1..0..0..0..0..1. .1..1..1..0..0..1..0

%e ..1..1..0..1..0..1..0. .0..0..0..0..0..0..0. .0..0..0..0..0..0..0

%e ..0..0..0..1..1..0..1. .1..0..0..0..1..1..0. .1..0..1..1..0..0..1

%e ..1..1..0..0..1..1..1. .0..1..0..1..1..0..0. .0..1..0..0..1..1..0

%Y Cf. A303410.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 23 2018