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December 18, 2014

December 18, 2014

Posted by **jaydene** on Wednesday, October 12, 2011 at 7:10am.

- algebra2 -
**Reiny**, Wednesday, October 12, 2011 at 9:47amYour numbers are called "triangular" numbers and are found in Pascal's triangle.

see:

http://milan.milanovic.org/math/english/triangular/triangular.html

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