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A304549 Number of nX6 0..1 arrays with every element unequal to 0, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero. 1

%I #4 May 14 2018 08:49:58

%S 1,272,749,12281,127607,1368963,16063367,183955750,2091952988,

%T 24171750958,277553198072,3190136513649,36716678813326,

%U 422284655045291,4857766186249146,55888831842122530,642944889250837908

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

%C Column 6 of A304551.

%H R. H. Hardin, <a href="/A304549/b304549.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304551.

%K nonn

%O 1,2

%A _R. H. Hardin_, May 14 2018

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Last modified March 29 02:16 EDT 2024. Contains 371264 sequences. (Running on oeis4.)