%I #6 Jun 15 2020 11:38:47
%S 0,4,48,466,5101,74685,1276034,30242236,1056423010,50039513246,
%T 3406811335705,353276120560238,52792202092264104
%N Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero.
%C Diagonal of A298846.
%e Some solutions for n=6
%e ..0..1..0..1..0..1. .0..1..0..1..0..1. .0..0..0..1..0..1. .0..1..1..1..0..0
%e ..1..0..1..1..1..0. .1..0..0..0..1..0. .0..1..1..1..1..0. .1..0..1..0..1..0
%e ..1..1..1..1..1..1. .0..0..0..0..0..0. .0..1..1..1..1..1. .1..1..1..1..0..1
%e ..1..0..1..1..1..0. .1..0..0..0..1..0. .1..1..1..1..1..0. .0..1..1..1..1..1
%e ..0..1..0..1..0..1. .0..1..0..1..0..1. .0..1..1..1..1..0. .0..1..1..1..0..1
%e ..0..0..1..1..1..0. .1..0..0..0..1..1. .1..0..1..0..0..0. .0..0..0..1..1..0
%Y Cf. A298846.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 27 2018
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