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A316447 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jul 03 2018 09:12:29

%S 8,928,10696,139705,2520180,39827783,621643922,10080547097,

%T 161747868059,2585482069092,41479734342725,665294366406575,

%U 10663443448097662,170965273126206457,2741254377851667993,43949488375165433197

%N Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A316448.

%H R. H. Hardin, <a href="/A316447/b316447.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316448.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 03 2018

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Last modified August 12 19:26 EDT 2024. Contains 375113 sequences. (Running on oeis4.)