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%I #7 Apr 19 2020 23:53:01
%S 1,6,32,434,12547,676269,78105580,18043360170,8435284786616,
%T 8062065704707386,15602483060688719807,61357587200669343827967,
%U 490367520450812937863879738,7957358933563948031830555664333
%N Number of n X n 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1 neighboring 1.
%C Diagonal of A296320.
%H R. H. Hardin, <a href="/A296314/b296314.txt">Table of n, a(n) for n = 1..16</a>
%e Some solutions for n=5
%e ..1..1..0..1..0. .1..0..0..0..0. .0..0..0..0..0. .0..0..0..1..0
%e ..0..0..0..1..0. .1..0..0..1..1. .1..0..0..1..0. .0..0..1..0..1
%e ..0..0..0..0..0. .0..0..0..0..0. .1..0..1..0..0. .0..0..0..1..0
%e ..1..0..1..1..0. .1..0..1..1..0. .0..0..0..1..0. .1..0..0..0..1
%e ..1..0..0..0..0. .1..0..0..0..0. .1..1..0..1..0. .1..0..0..1..0
%Y Cf. A296320.
%K nonn
%O 1,2
%A _R. H. Hardin_, Dec 10 2017
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