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A316452 Number of n X 5 0..1 arrays with every element unequal to 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 1

%I #6 May 14 2021 15:25:40

%S 3,51,58,229,1591,6590,29406,180787,1110885,5756268,36802761,

%T 229866739,1326398339,8345914515,51694139615,311041797197,

%U 1933674989684,11927131376828,72834711581082,450206903590675,2772873317202237

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

%C Column 5 of A316455.

%H R. H. Hardin, <a href="/A316452/b316452.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316455.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 03 2018

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Last modified April 25 09:38 EDT 2024. Contains 371967 sequences. (Running on oeis4.)