The sum of the 100th row is 100 3 = 1,000,000. If you add up the sum values of rows 1 to 8, the result is always the row number raised to the third power.

Schools sometimes teach “fact families:” triangles that connect three numbers based on their sum and differences. For example, the triangle below expresses the series of relationships: 5 + 3 = 8, 8 - ...