# Catalogue of Almost Almost Unitary Polyominoes

## Introduction

A *polyomino* is a figure made of equal squares joined
edge to edge.
A *unitary* polyomino is one whose edges all have length 1;
see Catalogue of Unitary Polyominoes.
An *almost unitary* polyomino has just one edge of length
greater than 1.
An *almost almost unitary* polyomino has just two edges of length
greater than 1.
See also Catalogue of Unitary Polyominoes
and Catalogue of Almost Unitary Polyominoes.

## Enumeration

Cells
| 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |

Almost Almost Unitary Polyominoes
| 1 | 2 | 2 | 4 | 12 | 15 | 29 | 58 | 116 | 199 | 403 | 790 |

## 2 Cells

## 3 Cells

## 4 Cells

## 5 Cells

## 6 Cells

## 7 Cells

## 8 Cells

## 9 Cells

## 10 Cells

Last revised 2014-08-23.

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Col. George Sicherman
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