%I #4 Dec 25 2014 07:03:59
%S 11943,57978,334197,2101338,13646115,90331596,603797472,4053062745,
%T 27261133281,183573601551,1236849898797,8335733861484,56186781207696,
%U 378754028778393,2553271491665079,17212557055072455,116037485548768206
%N Number of (n+2)X(4+2) 0..2 arrays with every consecutive three elements in every row, column and nw-se diagonal having exactly two distinct values, and new values 0 upwards introduced in row major order
%C Column 4 of A252952
%H R. H. Hardin, <a href="/A252948/b252948.txt">Table of n, a(n) for n = 1..161</a>
%e Some solutions for n=2
%e ..0..1..1..0..0..2....0..0..1..1..0..0....0..0..1..1..2..1....0..1..1..2..1..1
%e ..1..2..1..2..1..2....1..1..0..0..1..1....2..0..0..2..0..0....0..1..0..1..1..2
%e ..1..1..2..2..1..1....1..0..1..1..0..0....0..1..1..2..2..1....1..0..1..1..0..1
%e ..0..2..2..1..2..1....0..1..0..0..1..1....0..1..1..0..0..1....0..0..1..0..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 25 2014
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