The labyrinth ofpolyominoes
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Rectangle
Dir44\textrm{Dir}_{4}^{4}Dir44​
Wedge
Dir43\textrm{Dir}_{4}^{3}Dir43​
Staircase
Dir42t\textrm{Dir}_{4}^{2\textrm{t}}Dir42t​
Stack
Dir42c\textrm{Dir}_{4}^{2\textrm{c}}Dir42c​
Fork
Dir41\textrm{Dir}_{4}^{1}Dir41​
Bar chart
Dir32c\textrm{Dir}_{3}^{2\textrm{c}}Dir32c​
Diamond
Dir40\textrm{Dir}_{4}^{0}Dir40​
Wing
Dir31\textrm{Dir}_{3}^{1}Dir31​
Crescent
Dir30\textrm{Dir}_{3}^{0}Dir30​
Antler
Dir2c1\textrm{Dir}_{2\textrm{c}}^{1}Dir2c1​
Range chart
Dir2t0\textrm{Dir}_{2\textrm{t}}^{0}Dir2t0​
Bent tree
Dir2c0\textrm{Dir}_{2\textrm{c}}^{0}Dir2c0​
Tree
Dir10\textrm{Dir}_{1}^{0}Dir10​
Other
Dir00\textrm{Dir}_{0}^{0}Dir00​
Full Table
ClassesWedge

Wedge polyomino

A wedge is a polyomino that is diagonally directed from three corners. Wedges without punctures are called Ferrers diagrams, and are used as a way to represent the partition of a number. Wedges are both stacks and staircases.

Symbol

Dir43\textrm{Dir}_{4}^{3}Dir43​

Regex

ru(ru)*ld

Polyomino list

ru2ld
3
4
5
6
7
8
ru3ld
6
7
8