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, 07, 28 for July 28, 2016.)

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

20 | 16 | 07 | 28 |

29 | 6 | 25 | 11 |

14 | 10 | 30 | 17 |

8 | 39 | 9 | 15 |

Sum is 71.

20 | 16 | 07 | 28 |

98 | 2 | 64 | 5 |

32 | 35 | 14 | 4 |

1 | 56 | 10 | 112 |

Product is 62,720.

• 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 |