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A317227 Number of n X 5 0..1 arrays with every element unequal to 0, 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #6 Oct 19 2021 21:52:08

%S 16,120,488,2306,17039,101712,575421,3632635,22324637,134347668,

%T 824549745,5050822904,30786530633,188266299052,1151500695746,

%U 7035687340672,43009686929712,262955909491111,1607358232719317

%N Number of n X 5 0..1 arrays with every element unequal to 0, 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 5 of A317230.

%H R. H. Hardin, <a href="/A317227/b317227.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A317227/a317227.txt">Empirical recurrence of order 84</a>

%F Empirical recurrence of order 84 (see link above).

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317230.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 24 2018

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Last modified April 20 02:14 EDT 2024. Contains 371798 sequences. (Running on oeis4.)