Here are the smallest known fully symmetric polyominoes with an odd number of cells, formed by copies of a given tetromino and pentomino, using at least one of each.

See also Pentomino Pair Oddities, Hexiamond Pair Oddities and Pentahex Pair Oddities.

4I+5F 73 | 4I+5I 17 | 4I+5L 25 | 4I+5N 53 | 4I+5P 45 |
---|---|---|---|---|

4I+5T 89 | 4I+5U 77 | 4I+5V 33 | 4I+5W 129 | 4I+5X 21 |

4I+5Y 49 | 4I+5Z 65 | 4L+5F 25 | 4L+5I 33 | 4L+5L 25 |

4L+5N 25 | 4L+5P 9 | 4L+5T 33 | 4L+5U 33 | 4L+5V 25 |

4L+5W 41 | 4L+5X 21 | 4L+5Y 17 | 4L+5Z 25 | 4N+5F 37 |

4N+5I 57 | 4N+5L 57 | 4N+5N 33 | 4N+5P 37 | 4N+5T 73 |

4N+5U 85 | 4N+5V 73 | 4N+5W 53 | 4N+5X 21 | 4N+5Y 49 |

4N+5Z 61 | 4Q+5F 37 | 4Q+5I 49 | 4Q+5L 57 | 4Q+5N 37 |

4Q+5P 37 | 4Q+5T 173 | 4Q+5U 109 | 4Q+5V 9 | 4Q+5W 113 |

4Q+5X 21 | 4Q+5Y 65 | 4Q+5Z 61 | 4T+5F 17 | 4T+5I 13 |

4T+5L 25 | 4T+5N 25 | 4T+5P 33 | 4T+5T 17 | 4T+5U 9 |

4T+5V 61 | 4T+5W 13 | 4T+5X 21 | 4T+5Y 33 | 4T+5Z 45 |

4I+5F 77 | 4I+5T 101 | 4I+5U 121 | 4I+5V 49 | 4L+5I 41 |
---|---|---|---|---|

4L+5W 49 | 4N+5L 69 | 4N+5N 37 | 4N+5T 77 | 4N+5U 89 |

4N+5V 77 | 4Q+5T — | 4Q+5U — | 4Q+5Y 77 | 4T+5T 21 |

4T+5V 73 | 4T+5Z 57 | |||

Last revised 2020-01-24.

Back to Polyform Oddities < Polyform Curiosities

Col. George Sicherman [ HOME | MAIL ]