The first 'd' in italics suggests that it was surrounded by stars which were interpreted as formatting.
So, the formula 10 * d * d actually is:
10 * d * d
The series from the example 10, 40, 90, 160, ... gives it away too.
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The first 'd' in italics suggests that it was surrounded by stars which were interpreted as formatting.
So, the formula 10 * d * d actually is:
The series from the example 10, 40, 90, 160, ... gives it away too.