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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

Table of n, a(n) for n=1..6.

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: A105942 A219476 A008359 * A219938 A271670 A098935

Adjacent sequences:  A166844 A166845 A166846 * A166848 A166849 A166850

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 21 2009

STATUS

approved

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Last modified June 22 03:55 EDT 2021. Contains 345367 sequences. (Running on oeis4.)