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A317214 Number of nX7 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jul 23 2018 19:40:59

%S 1,908,14652,705763,31138620,1441577878,66735041323,3103003384185,

%T 144406060742969,6724517518065400,313206471103491601,

%U 14589794703117945367,679654520942938242570,31661882161040369005316

%N Number of nX7 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A317215.

%H R. H. Hardin, <a href="/A317214/b317214.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317215.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 23 2018

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Last modified August 31 01:57 EDT 2024. Contains 375550 sequences. (Running on oeis4.)