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%I #6 Nov 06 2020 19:13:01
%S 1,4,18,94,1134,12521,311014,12726939,841464188,99227326734,
%T 19635419823116,6617813957084794,3801727775370243509
%N Number of n X n 0..1 arrays with every element unequal to 0, 1, 2, 4 or 8 king-move adjacent elements, with upper left element zero.
%C Diagonal of A305245.
%e Some solutions for n=5
%e ..0..0..1..1..1. .0..0..1..1..1. .0..0..1..1..1. .0..0..0..1..0
%e ..1..1..1..1..1. .0..0..1..1..0. .1..1..1..0..1. .0..0..0..0..1
%e ..1..1..1..0..1. .0..1..1..1..0. .1..1..1..1..1. .0..0..0..0..0
%e ..0..1..1..1..1. .0..1..1..0..0. .0..1..1..1..1. .0..1..0..0..1
%e ..0..1..1..1..1. .1..1..1..0..0. .1..0..1..0..0. .0..0..0..0..1
%Y Cf. A305245.
%K nonn
%O 1,2
%A _R. H. Hardin_, May 28 2018
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