Pascal's Triangle, made of triangles. Each row of triangles represents a row of pascals triangle. 1 triangle represents a single digit. Therefore, the number 7 in the 8th row is represented by 7 triangles. This diagram goes to the 9th row. Each grouping of triangles that represents a number is separated from the other triangles by a (-) dash. So..
1
1-1
1-2-1
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