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A316173 Number of nX5 0..1 arrays with every element unequal to 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 1

%I #4 Jun 25 2018 17:38:43

%S 3,51,113,331,3087,16382,66575,500251,3416740,19047049,129559620,

%T 890468688,5562164262,37167105351,250462725049,1626396906120,

%U 10812077191872,72132909231600,474626430850484,3149382854919519

%N Number of nX5 0..1 arrays with every element unequal to 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Column 5 of A316176.

%H R. H. Hardin, <a href="/A316173/b316173.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316176.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 25 2018

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Last modified April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)