Matrix

This is a great problem which you can probably approach in a number of different ways.
All natural numbers are arranged as follows.

1 3 6 10 15 .
2 5 9 14 . .
4 8 13 . . .
7 12 . . . .
11 . . . . .
and so on.
Find the row and column number of the number 20096.

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