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A316243 Number of nX7 0..1 arrays with every element unequal to 0, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jun 27 2018 15:41:10

%S 1,908,13876,522349,20134728,772981023,30308496367,1182294908774,

%T 46316454084857,1813149363337170,71021918379356367,

%U 2781882031040610760,108971691811914024279,4268721007579120746968,167217433850643103927285

%N Number of nX7 0..1 arrays with every element unequal to 0, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A316244.

%H R. H. Hardin, <a href="/A316243/b316243.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316244.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jun 27 2018

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Last modified April 23 16:40 EDT 2024. Contains 371916 sequences. (Running on oeis4.)