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A305959 Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. 1

%I #4 Jun 15 2018 06:18:36

%S 5,1493,39985,1510278,53422574,1909062568,68109190612,2430866826404,

%T 86749580967244,3095897576075777,110485085575220364,

%U 3942947157982887199,140714318867570592197,5021756326535212808094,179214430688041222485533

%N Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

%C Column 6 of A305961.

%H R. H. Hardin, <a href="/A305959/b305959.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A305961.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 15 2018

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Last modified July 14 17:05 EDT 2024. Contains 374322 sequences. (Running on oeis4.)