General Intelligence · Number Series

Refer to the given series and answer the question that follows (all numbers are single-digit numbers only, and all counting is to be done from left to right): (Left) 2 2 3 3 1 7 8 4 2 8 6 5 4 3 9 1 4 2 1 2 9 1 6 2 3 4 8 1 (Right) How many such even digits are there, each of which is immediately preceded by a perfect square and immediately followed by an even digit? (Note: 1 will be considered as a perfect square.)