A231133 Number of (n+1)X(n+1) black-square subarrays of 0..2 arrays with no element equal to a strict majority of its diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.
1, 9, 308, 27171, 6794904, 4509445997, 8349491299560, 41122867660973690, 564457878709147238868, 20611335365445954476620968, 2097381737046509117354544061212, 567772314049031950964995256826728363
Offset: 1
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Examples
Some solutions for n=4 ..x..0..x..1..x....x..0..x..1..x....x..0..x..0..x....x..0..x..0..x ..2..x..0..x..2....1..x..2..x..2....1..x..0..x..1....0..x..1..x..2 ..x..0..x..1..x....x..0..x..0..x....x..1..x..1..x....x..2..x..1..x ..1..x..0..x..0....2..x..1..x..2....0..x..2..x..0....1..x..2..x..1 ..x..2..x..1..x....x..0..x..1..x....x..2..x..2..x....x..0..x..0..x
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