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, 14, 08, 29 for August 29, 2014.)

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

20 | 14 | 08 | 29 |

33 | 4 | 9 | 25 |

6 | 21 | 37 | 7 |

12 | 32 | 17 | 10 |

Sum is 71.

20 | 14 | 08 | 29 |

1 | 232 | 28 | 10 |

203 | 5 | 2 | 32 |

16 | 4 | 145 | 7 |

Product is 64,960.

• 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 |