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Splitting a 2 by N Rectangle (Posted on 2009-11-11) Difficulty: 3 of 5
Find an expression which yields the number of ways to split a 2 by N rectangle into two polyominoes. Rotations and reflections are NOT considered distinct.

For example, if N=1 there is only one way - two 1x1 squares.

If N=2 then there are two ways - one way is a 1x1 square with an "L" shape and two 2x1 rectangles as the other.

If N=3 then there are the 6 ways as depicted:

a a a
a a a
a a a
a a a
a a a
a a a
a a a
a a a
a a a
a a a
a a a
a a a


See The Solution Submitted by Brian Smith    
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  Subject Author Date
re(2): Tablebrianjn2009-11-12 10:20:46
re: TableJer2009-11-12 10:07:14
Tablebrianjn2009-11-11 20:29:08
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