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Number of n X 7 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1

%I #6 May 04 2021 14:45:22

%S 1,123,72,424,1868,11170,55922,291320,1544411,8168814,43135601,

%T 228337677,1208744793,6398223796,33881994478,179433657982,

%U 950232876834,5032989751367,26658489563077,141204904014504,747985019374304

%N Number of n X 7 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A302212.

%H R. H. Hardin, <a href="/A302211/b302211.txt">Table of n, a(n) for n = 1..199</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A302212.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 03 2018