In order to do number association or followers you would need to keep records and remember what fell. I've been doing it for so long that when a number falls I know where it has fallen before and what came with it even from years back. Like when 156 fell in SC. I knew that 136 wasn't fall behind it because I hit it in 2000 when both fell together and in other places. Some numbers are fast and fall right away. Sometimes you have to wait 10 days and sometimes weeks. Keeping records allow you to see the pattern and what states follow each other. I track pa ny sc ill and of course NC when we get up and running.
When repeats come it pushes them back. Some people call them traveling numbers. I match ny and pa together and watch sc and ill. I also record the race egg and butter from the dow. If I had my choice of what to record it would be the race egg and butter because it drives all the states.
What I do is that every new year I buy a dayminder weekly planner where sat and sun always fall at the end. A page is a week. You will need one like this if you keep a lot of states.
308 reared it's head again in chicago midday today. It's been bringing the 817 the last couple of weeks. It came in pa feb 13, this year brought 810 in ny.
But a sure association is when the same number falls in ny and pa on the same night like when 535 and 355 fell Sept. 5, 2004 and 308 fell in Chicago. 535 fell in SC Friday night. Since 535 and 355 are notorius repeater I will play them back in pa sc, an ny and ill tonite.