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A280485
Number of 6Xn 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
0
0, 4446, 149057, 2886700, 48481917, 767741328, 11437392975, 164847196124, 2309124917462, 31632356050545, 425475246875021
OFFSET
1,2
COMMENTS
Row 6 of A280480.
EXAMPLE
Some solutions for n=3
..0..0..0. .0..0..0. .0..0..0. .0..0..1. .0..0..0. .0..0..0. .0..0..0
..1..1..1. .1..1..0. .1..2..1. .0..1..1. .1..1..1. .1..1..0. .1..2..2
..2..2..2. .1..0..0. .2..1..2. .0..0..2. .1..0..0. .0..0..2. .2..0..0
..2..0..1. .0..1..1. .1..2..1. .0..2..0. .0..0..1. .0..2..1. .0..1..2
..0..1..1. .1..0..0. .2..1..1. .1..0..2. .0..1..2. .2..1..1. .2..2..0
..0..1..1. .0..2..0. .0..0..0. .0..2..2. .1..2..0. .1..1..0. .2..0..0
CROSSREFS
Cf. A280480.
Sequence in context: A043508 A114908 A102622 * A236906 A184611 A279042
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 04 2017
STATUS
approved