Since there's some people still saying that it's fraud, here's what the Indiana, Kansas, and New Jersey Powerball play slips look like. (Disclaimer: Got the images from Google)

As a reminder, the numbers were: 3-19-35-51-67-15

Indiana:

Indiana PB Play Slip

Kansas:

Kansas PB Play Slip

New Jersey:

New Jersey PB Play Slip

As you can see, some play slips from PB have the numbers in a straight vertical line or diagonal line. The reason why there are so many winners is because some people pick numbers like that. With a pattern.

This is also the reason why many people do quick picks for random numbers; it's because chances are if they use birthdays or some number sequence with a pattern, they'd have to share the jackpot with others if they win with that numerical pattern.

Anyways, you can stop with the fraud allegations. That many people can win with a pattern is also random and their good luck.