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%I #6 Apr 21 2020 13:00:42
%S 0,0,55,958,10954,89042,566178,3035844,14551996,65113158,280515214,
%T 1187820788,5004343732
%N Number of n X n 0..1 arrays with no element equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
%C Diagonal of A281080.
%e Some solutions for n=4
%e ..0..0..0..1. .0..1..0..0. .0..1..1..0. .0..1..0..1. .0..1..1..0
%e ..1..1..0..1. .1..1..1..1. .0..0..1..1. .1..0..1..0. .1..0..0..1
%e ..0..1..0..0. .0..0..0..1. .1..1..0..0. .1..0..1..1. .0..1..0..1
%e ..0..1..0..1. .1..1..0..1. .0..0..1..1. .1..1..0..1. .0..1..0..0
%Y Cf. A281080.
%K nonn
%O 1,3
%A _R. H. Hardin_, Jan 14 2017
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