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 Dascal triangle (Posted on 2016-02-02)
Arrange integers 1- 15 in a triangle such that the upper row consists of 5 integers, all other rows represent each the absolute values of the differences between the adjacent members of the row above so that the 5th row contains one number only.

```4   7  15  10   2
3  12   5   8
9   7   * oops!  Can't use 3 again.```
Just wanted to explain the build-up..
Better luck to the solvers!

 No Solution Yet Submitted by Ady TZIDON No Rating

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 re(4): computer solution | Comment 5 of 8 |
(In reply to re(3): computer solution by Charlie)

Searching for the string of 5 numbers you found yields a few hits.

http://mathoverflow.net/questions/47905/integers-in-a-triangle-and-differences

Seems to indicate it has been proven that n>5  is not possible.

Thanks for looking.

Edited on February 4, 2016, 5:14 pm
 Posted by Jer on 2016-02-04 07:24:10

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