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A316445 Number of nX5 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jul 03 2018 09:11:01

%S 3,120,712,5256,43568,325839,2520180,19750414,153125421,1191762840,

%T 9283634801,72267704187,562765930793,4382910061762,34133836239639,

%U 265841655059179,2070478139861857,16125743650200990,125594609626975988

%N Number of nX5 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

%C Column 5 of A316448.

%H R. H. Hardin, <a href="/A316445/b316445.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316448.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 03 2018

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Last modified April 23 22:36 EDT 2024. Contains 371917 sequences. (Running on oeis4.)