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A304008 Number of nX6 0..1 arrays with every element unequal to 0, 2, 3 or 5 king-move adjacent elements, with upper left element zero. 1

%I #4 May 04 2018 11:21:23

%S 1,49,53,115,271,538,1458,2973,7826,19113,47074,115148,283156,698411,

%T 1720946,4258788,10518418,26019796,64391560,159345205,394533973,

%U 976872015,2419079852,5991435758,14839400772,36760610050,91064615465

%N Number of nX6 0..1 arrays with every element unequal to 0, 2, 3 or 5 king-move adjacent elements, with upper left element zero.

%C Column 6 of A304010.

%H R. H. Hardin, <a href="/A304008/b304008.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304010.

%K nonn

%O 1,2

%A _R. H. Hardin_, May 04 2018

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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)