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

%I #7 Apr 05 2018 04:10:05

%S 64,8192,126162,2727755,49315068,982041385,18964765818,367139778723,

%T 7164671008446,139068565629649,2707332855884141,52711100145391758,

%U 1025817729699289943,19978633136068450415,389042172263675668618

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

%C Row 7 of A302265.

%H R. H. Hardin, <a href="/A302271/b302271.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5:

%e 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

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

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

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

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

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

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

%Y Cf. A302265.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 04 2018