Draw a doubled half-sample using the method described in Antal and Tille (2014)
draw_doubled_half_sample(n)A vector of length n,
with elements equal to 0, 1, 2, or 3.
This vector indicate how many times each unit
is resampled.
When n is even,
half the values will be 0 and the other half will be 2.
When n is odd, the values can be 0, 1, 2, or 3.
An integer greater than 1.