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%I #6 Jun 15 2020 14:42:52
%S 1,1,12,8,285,12411,902141,310347496,249358437986,595135127486520
%N Number of n X n 0..1 arrays with every element equal to 0, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.
%C Diagonal of A299521.
%e Some solutions for n=5
%e ..0..1..1..0..0. .0..1..0..1..1. .0..0..1..0..0. .0..0..0..0..0
%e ..1..1..1..0..0. .1..1..1..1..1. .0..0..0..0..0. .0..0..0..0..0
%e ..1..1..0..0..1. .0..1..1..0..0. .0..0..1..1..1. .1..1..1..1..1
%e ..0..0..0..0..0. .1..1..0..0..0. .0..0..1..1..1. .1..1..0..1..1
%e ..0..0..1..0..1. .1..1..0..0..1. .0..0..1..1..1. .0..1..1..1..0
%Y Cf. A299521.
%K nonn
%O 1,3
%A _R. H. Hardin_, Feb 11 2018