Declare and initialize a reference variable for an ArrayList named lengthList that stores items of type Integer. Read integer numLengths from input. Then, insert numLengths integers where each integer is equal to $(4*$ i$)+4,$ where i represents the integer's index into lengthList, in that order.

Ex: If the input is $3,$ then the output is:

$4812$

Note: Assume that numLengths is positive.