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A317609 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Aug 01 2018 13:45:45

%S 32,284,1413,13134,161091,1624676,17100005,193630364,2178634452,

%T 24423354992,278641884780,3190382356493,36484892756238,

%U 419094326168765,4820507477101129,55440074812589166,638406529075964676

%N Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 6 of A317611.

%H R. H. Hardin, <a href="/A317609/b317609.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317611.

%K nonn

%O 1,1

%A _R. H. Hardin_, Aug 01 2018

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Last modified May 8 19:26 EDT 2024. Contains 372341 sequences. (Running on oeis4.)