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A166824
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 increasing order.
0
1, 92, 1950, 18821, 117600, 558447
OFFSET
1,2
EXAMPLE
Some solutions for n=3
...1.1.1.4...1.1.1.2...1.1.4.4...1.1.1.4...1.1.3.4...1.1.2.4...1.1.3.3
...1.1.4.4...1.1.4.4...1.2.2.4...1.3.4.4...1.2.3.4...1.1.4.4...1.3.3.4
...1.2.4.3...3.4.4.4...3.2.4.4...3.3.2.4...1.4.4.4...3.4.4.4...2.3.3.4
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...1.1.1.4...1.1.4.4...1.1.3.3...1.1.2.3...1.2.2.4...1.2.2.2...1.1.2.2
...1.2.4.4...1.2.2.2...1.4.4.4...1.3.3.3...2.2.2.4...2.2.3.4...1.2.2.4
...3.2.2.4...1.2.2.3...4.4.2.4...1.3.4.3...3.3.4.4...2.3.3.3...1.3.3.3
CROSSREFS
Sequence in context: A269623 A265923 A249236 * A248451 A017808 A035741
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 21 2009
STATUS
approved