%I #5 Dec 29 2016 04:00:42
%S 1,2,26,92,307,1072,3541,11834,38687,125380,403369,1286926,4082099,
%T 12875608,40414141,126308002,393216967,1219867372,3772323793,
%U 11631678006,35769955803,109730814592,335856708581,1025808464330,3127008856047
%N Number of nX2 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
%C Column 2 of A280217.
%H R. H. Hardin, <a href="/A280212/b280212.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 4*a(n-1) +6*a(n-2) -20*a(n-3) -49*a(n-4) +24*a(n-5) +148*a(n-6) +128*a(n-7) -48*a(n-8) -128*a(n-9) -64*a(n-10) for n>14
%e Some solutions for n=4
%e ..0..1. .0..0. .0..1. .0..1. .0..1. .0..1. .0..0. .0..1. .0..0. .0..0
%e ..1..1. .1..0. .0..0. .0..1. .2..2. .1..1. .0..0. .1..1. .1..1. .0..1
%e ..1..1. .1..0. .2..2. .0..1. .2..1. .1..1. .0..1. .0..2. .1..1. .1..1
%e ..2..1. .1..1. .2..2. .0..0. .1..1. .2..2. .0..1. .2..2. .1..2. .0..2
%Y Cf. A280217.
%K nonn
%O 1,2
%A _R. H. Hardin_, Dec 29 2016