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A316799 Number of nX6 0..1 arrays with every element unequal to 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jul 14 2018 14:50:25

%S 0,33,92,581,3759,32193,213931,1526824,11680344,85121313,623628084,

%T 4639929927,34299709040,252979821754,1872487441264,13854162434758,

%U 102398014970654,757333463603656,5601928850524723,41425682624181338

%N Number of nX6 0..1 arrays with every element unequal to 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 6 of A316801.

%H R. H. Hardin, <a href="/A316799/b316799.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316801.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 14 2018

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Last modified April 19 09:23 EDT 2024. Contains 371782 sequences. (Running on oeis4.)