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, 11, 28 for November 28, 2014.)

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

20 | 14 | 11 | 28 |

30 | 9 | 1 | 33 |

6 | 27 | 36 | 4 |

17 | 23 | 25 | 8 |

Sum is 73.

20 | 14 | 11 | 28 |

77 | 4 | 140 | 2 |

56 | 22 | 7 | 10 |

1 | 70 | 8 | 154 |

Product is 86,240.

• 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 |