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A167252
Number of ways to partition an n X 6 grid into 2 connected equal-area regions
0
1, 6, 85, 856, 8171, 80518
OFFSET
1,2
EXAMPLE
Some solutions for n=4
...1.1.1.1.1.1...1.1.1.1.1.1...1.1.1.1.1.2...1.1.1.1.1.1...1.1.1.1.1.1
...1.2.1.2.2.2...1.2.2.2.1.2...1.2.2.1.1.2...1.1.1.2.1.2...2.1.1.1.1.2
...1.2.1.1.1.2...1.2.2.2.2.2...1.2.2.1.1.2...2.1.2.2.1.2...2.2.2.1.1.2
...2.2.2.2.2.2...1.1.1.2.2.2...1.2.2.2.2.2...2.2.2.2.2.2...2.2.2.2.2.2
------
...1.1.1.1.1.1...1.1.1.1.1.1...1.1.1.2.2.2...1.2.2.2.2.2...1.1.1.1.1.1
...1.1.2.2.2.1...1.1.1.2.1.1...1.2.2.2.2.2...1.1.1.2.1.2...1.2.1.2.2.1
...1.2.2.2.1.1...1.2.2.2.2.2...1.2.2.1.1.2...1.2.2.2.1.2...1.2.2.2.2.2
...2.2.2.2.2.2...2.2.2.2.2.2...1.1.1.1.1.2...1.1.1.1.1.2...1.1.2.2.2.2
------
...1.1.1.1.1.2...1.1.1.1.1.1...1.1.1.1.1.1...1.1.1.1.1.1...1.1.1.1.1.2
...1.1.2.1.2.2...1.1.2.1.2.1...1.1.1.1.2.1...2.1.2.1.1.1...1.1.1.1.2.2
...1.2.2.2.2.2...1.2.2.2.2.1...1.2.2.2.2.2...2.1.2.1.2.2...1.2.1.1.2.2
...1.1.1.2.2.2...2.2.2.2.2.2...2.2.2.2.2.2...2.2.2.2.2.2...2.2.2.2.2.2
CROSSREFS
Sequence in context: A330849 A245232 A284522 * A290011 A164266 A136597
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 31 2009
STATUS
approved