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%I #4 Mar 09 2017 18:28:28
%S 0,0,0,0,0,0,0,1,1,0,0,5,20,5,0,0,28,270,270,28,0,0,145,2763,5988,
%T 2763,145,0,0,703,26662,113984,113984,26662,703,0,0,3288,241796,
%U 2032993,4069571,2032993,241796,3288,0,0,14980,2115564,34279720,136572268
%N T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.
%C Table starts
%C .0.....0........0..........0.............0................0..................0
%C .0.....0........1..........5............28..............145................703
%C .0.....1.......20........270..........2763............26662.............241796
%C .0.....5......270.......5988........113984..........2032993...........34279720
%C .0....28.....2763.....113984.......4069571........136572268.........4331276717
%C .0...145....26662....2032993.....136572268.......8593156813.......510843580504
%C .0...703...241796...34279720....4331276717.....510843580504.....56913176714906
%C .0..3288..2115564..558718061..132684847054...29325852758117...6121670820777639
%C .0.14980.18020972.8877675769.3961612505725.1640229831666201.641300961433598943
%H R. H. Hardin, <a href="/A283522/b283522.txt">Table of n, a(n) for n = 1..180</a>
%F Empirical for column k:
%F k=1: a(n) = a(n-1)
%F k=2: [order 15]
%F k=3: [order 15] for n>19
%F k=4: [order 39] for n>43
%e Some solutions for n=4 k=4
%e ..0..0..0..1. .1..0..0..0. .0..0..0..0. .1..1..0..1. .0..0..1..0
%e ..1..1..1..0. .0..0..1..0. .0..1..1..0. .1..0..0..0. .1..1..0..0
%e ..1..1..0..1. .0..1..1..1. .0..0..1..1. .0..1..1..1. .1..1..0..0
%e ..0..1..0..0. .0..1..1..1. .0..1..1..1. .0..1..1..1. .1..0..1..0
%K nonn,tabl
%O 1,12
%A _R. H. Hardin_, Mar 09 2017
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