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A316617 Number of nX5 0..1 arrays with every element unequal to 0, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jul 08 2018 16:24:39

%S 1,26,29,70,189,468,1446,3769,11196,32714,93764,279178,822287,2402170,

%T 7095848,20929687,61595458,181688654,535849675,1579611326,4659075312,

%U 13742067957,40526906270,119535724423,352581261330,1039940121804

%N Number of nX5 0..1 arrays with every element unequal to 0, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 5 of A316620.

%H R. H. Hardin, <a href="/A316617/b316617.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316620.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 08 2018

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Last modified April 25 16:39 EDT 2024. Contains 371989 sequences. (Running on oeis4.)