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Triangular Number Sequence (1 Viewer)

fan96

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By adding another row of dots and counting all the dots we can find the next number of the sequence.
i.e. "count all the rows before, and add a new row".

The algorithm could look like:

Code:
BEGIN
    total = 0
    FOR row = 1 TO 10 STEP 1
        total = total + row
        Display total
    NEXT i
END
Specifically, look at this line:
Code:
 total = total + row
In total + row, total represents the sum of all the rows before, and row is the next row to be added.
 

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