Atlas V Configuration First Missions

For each configuration of the Atlas V launch vehicle flown by United Launch Alliance (and formerly by Lockheed Martin) name the first mission to utilize that configuration. The first number/letter (N/4/5) stands for the fairing diameter, the second number (0/1/2/3/4/5) stands for the number of Solid Rocket Boosters (SRBs), and the third number (1/2) stands for the number of RL-10 engines on the Centaur III upper stage.