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Number of 7Xn 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 #4 Apr 03 2018 12:05:13

%S 64,21,1065,172,6423,8756,55922,465040,1136003,19265064,60547641,

%T 699553699,3796928584,26139308319,214325335931,1151196050162,

%U 10992872734396,60033419186727,538343914163895,3376563558675197

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

%C Row 7 of A302212.

%H R. H. Hardin, <a href="/A302217/b302217.txt">Table of n, a(n) for n = 1..111</a>

%e Some solutions for n=5

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

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

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

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

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

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

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

%Y Cf. A302212.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 03 2018