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Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
1

%I #4 Jun 08 2018 08:17:46

%S 5,1493,61796,3346848,175572754,9226209199,484920924010,

%T 25486278629503,1339494303168987,70400464192916736,

%U 3700072426529501978,194466552461722063621,10220675610170124068561,537173147205637872687352

%N Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

%C Column 6 of A305692.

%H R. H. Hardin, <a href="/A305690/b305690.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A305692.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 08 2018