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A320362 Number of nX6 0..1 arrays with every element unequal to 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Oct 11 2018 14:02:19

%S 0,16,258,4563,91711,1752652,33825987,653183942,12600432002,

%T 243080087186,4689839536009,90482737755713,1745684561683732,

%U 33679631409545263,649784599619041645,12536354917749688506,241865054799427771058

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

%C Column 6 of A320364.

%H R. H. Hardin, <a href="/A320362/b320362.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..0..0..1..1. .0..1..0..1..0..1. .0..1..0..1..1..0

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

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

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

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

%Y Cf. A320364.

%K nonn

%O 1,2

%A _R. H. Hardin_, Oct 11 2018

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Last modified May 1 14:54 EDT 2024. Contains 372174 sequences. (Running on oeis4.)