This is an alternating repetition series. The number 32 alternates with a series in which each number decreases by 2.

This is a simple subtraction series, in which 4 is subtracted from each number to arrive at the next.

This is a simple subtraction series, in which 3 is subtracted from each number to arrive at the next.

In this simple addition with repetition series, each number in the series repeats itself, and then increases by 12 to arrive at the next number.

Here, there are two alternating patterns, with every other number following a different pattern. The first pattern begins with 13 and adds 2 to each number to arrive at the next; the alternating pattern begins with 29 and subtracts 3 each time.