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A300112 Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Feb 25 2018 06:29:50

%S 3,23,63,515,3776,28935,212470,1560065,11874071,89657570,673151916,

%T 5084857810,38419116117,289855498173,2187847733010,16520252054586,

%U 124719171802820,941517564864563,7108226078494466,53665231758411540

%N Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 5 of A300115.

%H R. H. Hardin, <a href="/A300112/b300112.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300115.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 25 2018

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Last modified April 16 13:59 EDT 2024. Contains 371734 sequences. (Running on oeis4.)