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A268012 Number of 3Xn 0..n arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order. 0
3, 96, 7445, 1396408, 454238345, 231327070236, 169569975455042, 169395686166997667, 221468092160400373173, 367444512792822698032517 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A268009.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

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

..0..1..0....2..2..1....2..0..3....1..1..0....0..0..2....1..2..2....2..3..0

..2..0..3....2..0..0....0..2..2....0..2..3....3..1..1....1..0..3....2..1..3

CROSSREFS

Cf. A268009.

Sequence in context: A300686 A300609 A301351 * A268181 A030262 A107173

Adjacent sequences:  A268009 A268010 A268011 * A268013 A268014 A268015

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 24 2016

STATUS

approved

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Last modified January 19 00:22 EST 2022. Contains 350464 sequences. (Running on oeis4.)