Yes, you're right. In this case, the Powerball comes last. So increasing straights can't end with 1, 2, 3, 4, or 5. However, you could have wrap around straight

Yes, you're right. In this case, the Powerball comes last. So increasing straights can't end with 1, 2, 3, 4, or 5. However, you could have wrap around straights. So 15 or 20 depending if you allow the wraparound.