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A167244 Number of ways to partition a 4*n X 3 grid into 4 connected equal-area regions 0
23, 1038, 25663, 508866, 9030533 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for n=3
...1.1.1...1.1.1...1.1.1...1.1.1...1.1.1...1.1.1...1.1.1...1.1.1...1.1.1
...1.1.1...1.1.1...1.1.1...1.1.1...1.1.1...1.1.1...1.1.1...1.1.1...1.1.1
...1.1.2...1.1.2...1.1.2...1.1.2...1.1.2...1.1.2...1.1.2...1.1.2...1.1.2
...1.2.2...1.2.2...1.2.2...1.2.2...1.2.2...1.2.2...1.2.2...1.2.2...1.2.2
...3.2.2...3.2.4...2.2.2...2.2.2...2.2.2...2.2.2...2.2.2...2.2.2...2.2.2
...3.2.2...3.2.4...3.2.2...2.2.3...3.2.2...2.2.2...3.2.2...2.3.3...2.2.2
...3.4.2...3.2.4...3.3.2...4.2.3...3.3.2...3.3.3...3.3.2...2.4.3...3.3.3
...3.4.2...3.2.4...3.4.4...4.4.3...3.4.4...4.4.3...4.3.3...2.4.3...4.4.3
...3.4.4...3.2.4...3.4.4...4.3.3...3.3.4...4.4.3...4.3.3...4.4.3...4.3.3
...3.4.4...3.2.4...3.3.4...4.4.3...3.4.4...4.4.3...4.4.3...4.4.3...4.3.3
...3.4.4...3.4.4...3.4.4...4.4.3...3.4.4...4.3.3...4.4.3...4.3.3...4.3.4
...3.3.4...3.3.4...3.4.4...4.3.3...3.4.4...4.4.3...4.4.4...4.4.3...4.4.4
CROSSREFS
Sequence in context: A232757 A139193 A077283 * A130551 A069479 A174748
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 31 2009
STATUS
approved

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Last modified March 1 20:05 EST 2024. Contains 370443 sequences. (Running on oeis4.)