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A268088 Number of nX3 0..2 arrays with every repeated value in every row not one larger and in every column one larger mod 3 than the previous repeated value, and upper left element zero. 1
9, 243, 4608, 83349, 1339893, 20699712, 303284403, 4320438183, 59802048000, 811951057125, 10831783903677, 142591596848064, 1855468989421875, 23920516469271231, 305928653301448704, 3886833181740400197 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A268092.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 27*a(n-1) -88*a(n-2) -2949*a(n-3) +19763*a(n-4) +105684*a(n-5) -917208*a(n-6) -1283256*a(n-7) +14673312*a(n-8) +279936*a(n-9) -60466176*a(n-10)

EXAMPLE

Some solutions for n=4

..0..1..1....0..1..0....0..1..1....0..2..2....0..0..0....0..2..2....0..0..1

..1..0..2....2..0..1....2..2..1....0..2..2....0..2..0....1..2..2....0..0..2

..0..2..1....1..0..1....1..0..2....1..0..0....1..2..2....1..1..0....1..1..1

..0..1..1....0..2..0....1..1..2....1..2..1....2..1..0....2..2..1....2..0..0

CROSSREFS

Cf. A268092.

Sequence in context: A251670 A075127 A267416 * A285511 A013733 A295228

Adjacent sequences:  A268085 A268086 A268087 * A268089 A268090 A268091

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 26 2016

STATUS

approved

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Last modified November 20 14:54 EST 2019. Contains 329337 sequences. (Running on oeis4.)