python list comprehension to produce two values in one iteration

Question

I want to generate a list in python as follows -

[1, 1, 2, 4, 3, 9, 4, 16, 5, 25 .....]

You would have figured out, it is nothing but n,

Answer 1

Try this two liner

lst = [[i, i*i] for i in range(10)]
[lst.extend(i) for i in lst]

Change math as necessary.

EVEN BETTER

#Change my_range to be the number you want range() function of
start = 1
my_range = 10
lst = [i/2 if i % 2 == 0 else ((i-1)/2)**2 for i in range(start *2, my_range*2 - 1)]