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Number of nX7 0..1 arrays with every element equal to 0, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1

%I #4 Mar 04 2018 09:19:37

%S 1,74,131,692,6577,53367,481311,4070089,36505624,319929622,2837476138,

%T 25246596055,223898861023,1988295398102,17653104464628,

%U 156742758122408,1391761200734035,12357651656612721,109729025922860987

%N Number of nX7 0..1 arrays with every element equal to 0, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A300380.

%H R. H. Hardin, <a href="/A300379/b300379.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300380.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 04 2018