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%I #6 Aug 20 2020 11:36:49
%S 0,2,13,97,1130,23097,865205,57365508,7042663221,1472367608349
%N Number of n X n 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
%C Diagonal of A300639.
%e Some solutions for n=5
%e ..0..0..0..0..0. .0..0..1..1..1. .0..0..1..0..1. .0..0..1..0..0
%e ..1..1..1..1..1. .1..1..0..0..0. .1..1..1..0..1. .1..1..1..1..1
%e ..0..0..0..0..1. .1..1..1..1..1. .1..0..0..1..0. .1..1..0..0..0
%e ..1..1..1..0..0. .1..1..1..1..0. .0..1..1..0..1. .1..1..1..1..0
%e ..0..0..1..1..0. .1..0..0..1..0. .0..0..0..1..1. .1..0..0..1..1
%Y Cf. A300639.
%K nonn
%O 1,2
%A _R. H. Hardin_, Mar 10 2018
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