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Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.
1

%I #4 Feb 22 2018 07:35:00

%S 32,137,83,401,1604,4604,19269,79664,307083,1300811,5389498,21656467,

%T 90844659,377188450,1535884924,6395385562,26547019499,108823497559,

%U 451305781478,1871506391092,7700799334508,31873032044596,132044406452363

%N Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 6 of A299948.

%H R. H. Hardin, <a href="/A299946/b299946.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A299948.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 22 2018