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, 03, 27 for March 27, 2017.)

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

20 | 17 | 03 | 27 |

23 | 7 | 21 | 16 |

10 | 5 | 34 | 18 |

14 | 38 | 9 | 6 |

Sum is 67.

20 | 17 | 03 | 27 |

-81 | -1 | -170 | -2 |

-17 | -6 | -27 | -10 |

1 | 270 | 2 | 51 |

Product is 27,540.

Negative numbers are used.

• 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 |