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A167254 Number of ways to partition an n X 6 grid into 6 connected equal-area regions 1
1, 13, 170, 2003, 27950, 451206, 6633399, 99697633, 1418159011 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
Some solutions for n=4
...1.1.2.2.2.3...1.1.1.1.2.3...1.2.2.2.2.3...1.1.2.2.2.3...1.1.1.2.2.2
...1.4.4.2.3.3...4.4.2.2.2.3...1.1.1.3.3.3...1.1.2.4.4.3...1.3.3.3.3.2
...1.4.4.5.5.3...5.4.4.6.6.3...4.5.5.5.6.6...5.6.6.6.4.3...4.4.5.5.6.6
...6.6.6.6.5.5...5.5.5.6.6.3...4.4.4.5.6.6...5.5.5.6.4.3...4.4.5.5.6.6
------
...1.1.1.2.3.3...1.2.3.3.3.3...1.1.2.2.2.2...1.2.3.4.4.5...1.1.1.1.2.2
...1.2.2.2.3.3...1.2.2.2.4.4...3.1.4.5.5.5...1.2.3.4.5.5...3.3.3.3.2.4
...4.4.5.5.5.5...1.5.5.6.4.4...3.1.4.4.6.5...1.2.3.4.6.5...5.6.6.6.2.4
...4.4.6.6.6.6...1.5.5.6.6.6...3.3.4.6.6.6...1.2.3.6.6.6...5.5.5.6.4.4
------
...1.1.2.2.2.3...1.1.2.3.3.4...1.2.2.3.3.3...1.1.2.3.3.3...1.1.2.2.2.3
...1.4.2.5.5.3...1.2.2.2.3.4...1.2.2.3.4.5...1.4.2.5.5.3...1.1.2.3.3.3
...1.4.5.5.6.3...1.5.5.6.3.4...1.6.4.4.4.5...1.4.2.5.6.6...4.4.4.5.5.5
...4.4.6.6.6.3...5.5.6.6.6.4...1.6.6.6.5.5...4.4.2.5.6.6...4.6.6.6.6.5
CROSSREFS
Sequence in context: A067220 A057684 A053153 * A140455 A041314 A275293
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 31 2009
STATUS
approved

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Last modified March 19 01:34 EDT 2024. Contains 370952 sequences. (Running on oeis4.)