g Let an denote the number of sequences of length n using the symbols {0, 1, 2, 3} in which there is never a 0 anywhere to the right of a 3. Find a recurrence relation for an with an a appropriate number of initial terms.

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.