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A317900 Number of nX6 0..1 arrays with every element unequal to 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Aug 10 2018 10:39:34

%S 0,9,4,54,75,167,502,2064,5877,17008,53512,175313,540037,1715436,

%T 5431253,17142134,54068313,171199743,541229806,1711178754,5411163506,

%U 17113807354,54113456322,171137431243,541218521011,1711575715106,5412770092466

%N Number of nX6 0..1 arrays with every element unequal to 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 6 of A317902.

%H R. H. Hardin, <a href="/A317900/b317900.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317902.

%K nonn

%O 1,2

%A _R. H. Hardin_, Aug 10 2018

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)