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A166846 Number of nX4 1..3 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in decreasing order. 0
0, 9, 109, 673, 2923, 10112, 29741, 77372, 182772, 399321 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

EXAMPLE

Some solutions for n=4

...2.2.1.1...2.1.1.1...1.1.1.1...2.1.1.1...3.2.2.1...3.2.2.2...2.2.2.2

...2.2.2.2...2.2.1.1...2.1.1.1...2.2.1.1...3.2.2.1...3.3.2.1...3.2.2.1

...3.2.3.2...2.2.2.1...2.2.2.1...2.2.2.1...3.2.2.1...3.3.2.2...3.3.2.1

...3.3.3.3...3.3.3.3...2.3.2.1...2.2.3.3...3.3.2.2...3.3.2.2...3.3.3.1

------

...2.1.1.1...2.2.2.1...2.2.2.2...1.1.1.1...3.2.1.1...2.2.2.2...2.1.1.1

...2.2.2.1...2.2.2.1...3.2.2.1...1.1.1.1...3.2.2.1...3.2.1.1...2.2.2.1

...2.2.2.1...3.2.2.1...3.2.2.1...3.2.1.1...3.2.2.1...3.2.3.1...2.3.2.1

...2.3.2.1...3.3.2.2...3.3.1.1...3.2.2.1...3.3.3.1...3.3.3.1...3.3.2.1

CROSSREFS

Sequence in context: A330876 A001691 A157906 * A058421 A267795 A128876

Adjacent sequences:  A166843 A166844 A166845 * A166847 A166848 A166849

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 21 2009

STATUS

approved

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Last modified June 17 19:09 EDT 2021. Contains 345085 sequences. (Running on oeis4.)