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A305591 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero. 1

%I #4 Jun 05 2018 18:37:47

%S 32,569,6818,89466,1103744,13941521,175683720,2213918787,27910555993,

%T 351952078164,4437792774181,55955951985349,705571347078058,

%U 8896876212494566,112184230213989901,1414576206492956374

%N Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

%C Column 6 of A305593.

%H R. H. Hardin, <a href="/A305591/b305591.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A305593.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 05 2018

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Last modified April 20 00:03 EDT 2024. Contains 371798 sequences. (Running on oeis4.)