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A231318
Number of (n+1) X (2+1) 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
24, 432, 9600, 192192, 3917184, 79306752, 1607468544, 32569451520, 659942375424, 13371898245120, 270945239064576, 5489964932136960, 111239155883802624, 2253957795356147712, 45670301427851329536, 925383976903713226752
OFFSET
1,1
COMMENTS
Column 2 of A231324.
LINKS
FORMULA
Empirical: a(n) = 22*a(n-1) -776*a(n-3) +944*a(n-4) +7168*a(n-5) -12416*a(n-6) +9216*a(n-8) -4096*a(n-9).
EXAMPLE
Some solutions for n=4
..0..1..0....0..0..1....0..0..0....0..1..0....0..1..0....0..0..0....0..0..0
..0..1..2....0..2..1....1..2..1....0..1..1....2..2..0....1..2..0....1..1..1
..0..0..0....2..1..1....2..0..0....1..2..0....1..0..2....2..1..2....2..2..2
..1..0..0....2..0..0....2..1..1....2..0..2....1..1..2....2..0..0....0..2..0
..2..2..1....2..0..1....2..2..2....2..1..2....2..2..0....2..2..2....1..1..0
CROSSREFS
Cf. A231324.
Sequence in context: A081128 A059158 A062149 * A083195 A004358 A006260
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 07 2013
STATUS
approved