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A166847 Number of nX4 1..4 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
1, 84, 1595, 14610, 89718, 425640 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
Some solutions for n=3
...2.1.1.1...3.3.2.1...2.2.1.1...4.3.3.1...1.1.1.1...3.3.1.1...4.3.1.1
...4.1.1.1...4.1.1.1...3.2.4.1...4.3.3.1...3.3.1.1...4.1.1.1...4.3.4.2
...4.4.3.1...4.4.4.4...3.3.4.1...4.4.2.1...4.3.3.2...4.4.4.2...4.4.4.2
------
...2.2.2.2...3.3.3.1...3.2.1.1...3.1.1.1...2.2.2.2...4.3.2.1...3.3.3.3
...3.2.2.1...4.2.2.2...3.2.2.1...3.3.2.1...3.3.2.1...4.4.4.1...4.3.2.2
...4.2.1.1...4.4.2.2...3.4.4.1...3.4.2.2...4.2.2.2...4.4.4.1...4.3.3.1
CROSSREFS
Sequence in context: A219476 A008359 A359934 * A219938 A271670 A358864
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 21 2009
STATUS
approved

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Last modified March 28 07:48 EDT 2024. Contains 371235 sequences. (Running on oeis4.)