I wonder if anyone else does this...
I have a tendency to try and find the pattern in seemingly random events or things.
I noticed it when I got on the elevator this morning. The buttons pushed were 4, 8, 16, and 20. Which are all multiples of four. Then I started trying to think of it as powers of two, or adding and subtracting sequences... Then I realized what I was doing and stopped myself because I thought it was a wee bit psycho.