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, 07, 26 for July 26, 2014.)

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

20 | 14 | 07 | 26 |

29 | 4 | 21 | 13 |

16 | 18 | 24 | 9 |

2 | 31 | 15 | 19 |

Sum is 67.

20 | 14 | 07 | 26 |

91 | 2 | 56 | 5 |

28 | 35 | 13 | 4 |

1 | 52 | 10 | 98 |

Product is 50,960.

• 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 |