One-Sided Pentomino Oddities

A polyomino oddity is a symmetrical figure formed by an odd number of copies of a polyomino. Here are the minimal known oddities for the 6 one-sided pentominoes without mirror symmetry. If you find a smaller solution, or solve an unsolved case, please write.

For two-sided pentominoes, see Pentomino Oddities.

LateralDiagonalRotaryDouble
Orthogonal		Double
Diagonal		Double
Rotary		Full
7
9
17
       
7
7
7
25
33
21
53
7
7
11
       
3
5
7
11
21
17
29
5
7
13
       
17
25
1
17
25
   

Holeless Variants

Orthogonal

Diagonal

Birotary

Double Orthogonal

Double Diagonal

Double Rotary

Full

Last revised 2024-11-23.
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Col. George Sicherman [ HOME | MAIL ]