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, 16, 06, 28 for June 28, 2016.)

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

20 | 16 | 06 | 28 |

32 | 2 | 26 | 10 |

11 | 9 | 33 | 17 |

7 | 43 | 5 | 15 |

Sum is 70.

20 | 16 | 06 | 28 |

84 | 2 | 4 | 80 |

1 | 15 | 448 | 8 |

32 | 112 | 5 | 3 |

Product is 53,760.

• 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 |