Puzzle 3 - Again, x,y

After playing with the chess board, lets have some some fun with cryptic and predict. Hoping your answers the hint of 'logic'. With the next puzzle, you can post the answer.

Which two numbers come at the end of this sequence?
2, 4, 6, 30, 32, 34, 36, 40, 42, 44, 46, 50, 52, 54, 56, 60, 62, 64, 66, x, y