An algorithm starts with a single square and on each of its next iterations adds new squares all around the outside as shown below.
S S S S
S S S S S S S S S
S S S S
n = 1 n = 2 n = 3
How many unit squares will there be after the nth iteration?
Project Euler: Problem 6, Natural numbers, squares and sums.
Spot the outlier
Add two numbers
Find the dimensions of a matrix
Square the input
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