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A304418 Number of nX7 0..1 arrays with every element unequal to 0, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero. 1

%I #4 May 12 2018 09:29:21

%S 1,908,13876,522349,19831472,755715475,29251894460,1129111647895,

%T 43720181502419,1692279362380702,65535352716520652,

%U 2537854898056513264,98286511740001193246,3806474124269642685818,147419813472926783207962

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

%C Column 7 of A304419.

%H R. H. Hardin, <a href="/A304418/b304418.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304419.

%K nonn

%O 1,2

%A _R. H. Hardin_, May 12 2018

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Last modified April 23 05:37 EDT 2024. Contains 371906 sequences. (Running on oeis4.)