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A268250 Number of 3Xn 0..n arrays with every repeated value in every row greater than, and every column greater than or equal to, the previous repeated value. 0
8, 729, 216000, 185193000, 337153536000, 1125058699232216, 6206699397581803008, 52644642506757331562232, 650274909835389362799561000, 11215805818364638436336901795648 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A268249.

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Cf. A268249.

Sequence in context: A014387 A220641 A017007 * A268106 A023813 A068895

Adjacent sequences:  A268247 A268248 A268249 * A268251 A268252 A268253

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 29 2016

STATUS

approved

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Last modified October 23 11:48 EDT 2019. Contains 328345 sequences. (Running on oeis4.)