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A166787 Number of nX4 1..3 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order. 0
18, 330, 2340, 11261, 42611, 136460, 385764, 988439 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=3

...2.2.2.2...2.2.1.1...1.1.2.2...2.1.3.3...2.2.2.2...2.1.1.1...2.2.2.2

...2.2.2.2...2.3.1.1...1.1.2.2...2.3.3.3...3.3.2.1...2.1.2.1...2.3.1.1

...3.3.2.1...2.3.3.1...3.1.1.1...3.3.3.3...3.3.2.1...2.2.2.3...3.3.3.3

------

...1.1.1.1...2.1.3.3...1.1.1.1...1.1.1.3...1.1.1.1...2.2.2.2...2.2.1.2

...1.2.1.3...3.3.3.3...1.1.1.3...2.1.1.3...3.2.1.1...3.2.1.1...2.2.2.2

...1.2.3.3...3.3.3.3...1.2.2.2...2.3.3.3...3.3.3.1...3.2.2.1...2.3.2.2

CROSSREFS

Sequence in context: A041145 A041614 A222812 * A280806 A068771 A039646

Adjacent sequences:  A166784 A166785 A166786 * A166788 A166789 A166790

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 21 2009

STATUS

approved

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Last modified May 21 09:30 EDT 2022. Contains 353908 sequences. (Running on oeis4.)