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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 (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=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

Adjacent sequences:  A167249 A167250 A167251 * A167253 A167254 A167255

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 31 2009

STATUS

approved

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Last modified December 2 17:48 EST 2021. Contains 349445 sequences. (Running on oeis4.)