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A298955 Number of nX6 0..1 arrays with every element equal to 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jan 30 2018 13:02:24

%S 0,5,5,11,22,102,390,1990,8875,42338,200422,1001873,4864576,24344988,

%T 120791381,599718216,2979586795,14824136258,73594777737,365973623961,

%U 1819455689317,9043962959653,44964812729586,223577501339948

%N Number of nX6 0..1 arrays with every element equal to 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 6 of A298957.

%H R. H. Hardin, <a href="/A298955/b298955.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A298957.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 30 2018

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Last modified April 19 06:16 EDT 2024. Contains 371782 sequences. (Running on oeis4.)