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%I #6 Apr 21 2020 13:02:03
%S 1,8,68,607,6256,63168,639142,6658147,71489598,791069059,9041456464,
%T 108750132498
%N Number of n X n 0..1 arrays with no element equal to more than three of its king-move neighbors and with new values introduced in order 0 sequentially upwards.
%C Diagonal of A281344.
%e Some solutions for n=4
%e ..0..0..1..0. .0..1..0..0. .0..0..0..0. .0..0..1..0. .0..0..0..1
%e ..0..1..1..1. .1..1..0..1. .0..1..1..0. .1..0..1..0. .1..1..1..1
%e ..1..0..0..0. .0..1..0..1. .1..0..1..0. .1..0..1..0. .0..0..0..0
%e ..1..1..0..1. .1..0..0..1. .1..0..0..1. .1..1..0..1. .0..1..1..1
%Y Cf. A281344.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 20 2017
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