Magic Square Maker

• This page allows you to choose 4 integers (0 ~ 100,000) and creates a 4x4 magic square with the specified 4 numbers in the top row. ("Magic square" in Wikipedia)

• All numbers are unique unless duplicate(s) / triplicate / quadruplicate are specified for the top row.

• Negative numbers are used only if no solution is available otherwise.

• The numbers in the top row appear with leading 0's if they are entered with leading 0's.

(Useful for a date matrix, e.g., enter 20, 17, 09, 22 for September 22, 2017.)

• Read more at "behind the Magic Square Maker".

20 | 17 | 09 | 22 |

6 | 25 | 3 | 34 |

23 | 24 | 16 | 5 |

19 | 2 | 40 | 7 |

Sum is 68.

20 | 17 | 09 | 22 |

99 | 2 | 68 | 5 |

34 | 45 | 11 | 4 |

1 | 44 | 10 | 153 |

Product is 67,320.

• This program is written in R (r-project.org).

The "brew" package is used to integrate R and HTML.

• Magic square maker | • How many days |

• Pythagorean triples finder | • Prime factorization |

• Bivariate baseball score plots | • 3+3 designs |