A299319 - OEIS

%I #4 Feb 06 2018 13:48:00

%S 1,9,146,284,6051,44381,473924,4898412,51303757,560144415,6042198393,

%T 65973666490,720410978977,7878701955428,86252362060965,

%U 944390263513343,10344434170986780,113317722430202816,1241460522814886751

%N Number of nX6 0..1 arrays with every element equal to 0, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Column 6 of A299321.

%H R. H. Hardin, <a href="/A299319/b299319.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A299321.

%K nonn

%O 1,2

%A _R. H. Hardin_, Feb 06 2018