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A316814 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. 1

%I #4 Jul 14 2018 15:08:42

%S 64,8192,567185,37935501,2578023456,174669587289,11834952392431,

%T 802147875327622,54360782611063950,3684133662306606773,

%U 249679808890718960449,16921207212911865651787,1146779203111773150063701

%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

%C Column 7 of A316815.

%H R. H. Hardin, <a href="/A316814/b316814.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316815.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 14 2018

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Last modified April 12 19:05 EDT 2024. Contains 371636 sequences. (Running on oeis4.)