Tomato plants

I'm new to square foot gardening, but not gardening in general. This year we are building several 4x4 raised beds. One thing i want to grow for sure is tomatoes. I'm reading conflicting info, some say you can do a tomatoes in a square foot, some say 2 sq ft, other says 4 or higher. I would like to utilize the space the best I, i feel a tomato per square foot is really crowded, but how about 1 per 2 square ft? I do plan on staking them and pruning.