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%I #8 Apr 19 2020 23:58:04
%S 1,8,255,32321,16288960,32640586945,260070240849459,
%T 8239275981240122104,1037894641315598870418625,
%U 519856344665932729699372254283,1035331146709687346593709910443435692
%N Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
%C Diagonal of A300182.
%H R. H. Hardin, <a href="/A300176/b300176.txt">Table of n, a(n) for n = 1..13</a>
%e Some solutions for n=5
%e ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
%e ..0..0..0..0..1. .0..0..0..0..1. .0..0..0..1..0. .0..0..0..0..0
%e ..1..1..1..0..1. .1..0..1..1..1. .1..1..0..1..0. .0..1..0..1..1
%e ..0..0..0..1..0. .0..0..0..1..1. .1..1..1..1..1. .1..0..0..1..0
%e ..1..1..0..1..0. .0..0..0..0..0. .1..1..1..1..0. .0..0..1..0..0
%Y Cf. A300182.
%K nonn
%O 1,2
%A _R. H. Hardin_, Feb 27 2018
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