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

%I #6 Oct 19 2021 11:48:52

%S 1,8,134,3653,168051,14569771,2280994876,658322110177,351724619629025,

%T 348538706870343133,641870813261257824216

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

%C Diagonal of A316183.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316183.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jun 25 2018