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A298580 Number of nX6 0..1 arrays with every element equal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero. 1

%I #4 Jan 22 2018 06:28:07

%S 5,49,113,844,3284,16521,90381,457878,2383346,12834179,68034896,

%T 360124819,1923634836,10262125104,54658517756,291557084959,

%U 1555797575002,8298896752343,44272773568783,236226451253835,1260403679006659

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

%C Column 6 of A298582.

%H R. H. Hardin, <a href="/A298580/b298580.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A298582.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 22 2018

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Last modified August 5 22:23 EDT 2024. Contains 374957 sequences. (Running on oeis4.)