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%I #11 Mar 31 2018 16:59:21
%S 1,7,52,589,12369,447946,33392871,5113575513,1429279770363,
%T 778931167439996
%N Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
%C Diagonal of A300881.
%e Some solutions for n=5:
%e 0 1 1 1 1 0 1 1 0 1 0 1 0 0 1 0 1 1 1 1
%e 1 0 0 0 1 1 0 0 0 1 0 1 0 1 1 1 0 0 0 0
%e 1 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 1 1 1
%e 1 0 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 0 1
%e 0 0 0 1 0 1 1 0 1 1 0 0 1 0 0 0 1 1 1 0
%Y Cf. A300881.
%K nonn,more
%O 1,2
%A _R. H. Hardin_, Mar 14 2018
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