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Number of (n+1)X(n+1) 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order
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%I #4 Nov 06 2013 07:52:10

%S 2,15,304,19503,3130708,1350570015,1496478177166,4339950773804841,

%T 32510127329051575349,631327524382609726232392,

%U 31694391041907948471880253567

%N Number of (n+1)X(n+1) 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order

%C Diagonal of A231263

%e Some solutions for n=3

%e ..0..0..0..0....0..0..1..1....0..0..1..1....0..0..0..0....0..0..0..1

%e ..1..1..1..1....0..1..1..2....0..1..1..2....1..1..0..0....0..0..1..0

%e ..2..2..2..2....2..2..2..0....1..2..2..0....1..2..2..0....1..1..0..2

%e ..1..1..1..1....2..2..0..0....2..2..0..0....2..2..0..0....0..0..2..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 06 2013