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A267714
Number of nX3 0..1 arrays with every repeated value in every row and column greater than the previous repeated value.
1
6, 36, 102, 270, 546, 1080, 1866, 3186, 5010, 7830, 11550, 17004, 23934, 33726, 45786, 62364, 82254, 109008, 140406, 181890, 229674, 291852, 362346, 452862, 554106, 682578, 824622, 1002960, 1198182, 1440930, 1704378, 2029080, 2378838, 2806428
OFFSET
1,1
COMMENTS
Column 3 of A267719.
LINKS
FORMULA
Empirical: a(n) = 2*a(n-1) +4*a(n-2) -10*a(n-3) -5*a(n-4) +20*a(n-5) -20*a(n-7) +5*a(n-8) +10*a(n-9) -4*a(n-10) -2*a(n-11) +a(n-12)
EXAMPLE
Some solutions for n=5
..0..1..1....0..1..1....0..0..1....1..1..0....1..0..0....1..0..0....1..0..0
..1..0..0....1..0..0....0..1..0....0..0..1....1..0..1....0..1..1....0..1..1
..0..1..1....1..1..0....1..0..1....0..1..0....0..1..1....1..0..0....1..0..1
..1..0..1....0..0..1....0..1..1....1..0..1....1..1..0....0..1..0....0..1..0
..0..1..0....1..1..0....1..1..0....1..1..0....0..0..1....0..0..1....0..1..1
CROSSREFS
Cf. A267719.
Sequence in context: A207462 A086113 A207903 * A207747 A208023 A207961
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 19 2016
STATUS
approved