Rectification Numbers for Polyaboloes

Introduction

A polyabolo or polytan is a plane figure formed by joining equal isosceles right triangles edge to equal edge.

In issue 14 of Rodolfo M. Kurchan's Puzzle Fun, Gustavo Piñeiro defines the rectification number of a polyomino as the least number of cells that can be left vacant when copies of the polyomino are packed in a rectangle. Here I investigate the same problem for polyaboloes.

In the results below, I omit polyaboloes that can be rectified—that is, that can tile some rectangle. Such polyaboloes have Rectification Number 0.

See also Oblique Rectification Numbers for Polyaboloes.

Triaboloes

2 Vacant Cells

5 Vacant Cells

Tetraboloes

2 Vacant Cells

4 Vacant Cells

8 Vacant Cells

Pentaboloes

2 Vacant Cells

3 Vacant Cells

4 Vacant Cells

6 Vacant Cells

7 Vacant Cells

8 Vacant Cells

12 Vacant Cells

13 Vacant Cells

Hexaboloes

2 Vacant Cells

4 Vacant Cells

6 Vacant Cells

8 Vacant Cells

10 Vacant Cells

12 Vacant Cells

18 Vacant Cells

Heptaboloes

1 Vacant Cell

2 Vacant Cells

4 Vacant Cells

5 Vacant Cells

6 Vacant Cells

9 Vacant Cells

10 Vacant Cells

11 Vacant Cells

16 Vacant Cells

17 Vacant Cells

18 Vacant Cells

22 Vacant Cells

25 Vacant Cells

Last revised 2023-09-07.


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Col. George Sicherman [ HOME | MAIL ]