I used to see 17 everywhere. Now I always see repeating digits. Example: I'll be playing a video game and will check how much gold I have and it's always something like 333. I see 333 ALL the time for some reason.
I have no explanation for it.
Then the usual stuff like 11:11 when looking at the clock.
It's like my subconscious mind is keeping track of repeating digits and telling me to look when it occurs.
It is entrainment. Say someone mentions seeing a woman with a red hat, you might begin to notice women with red hats everywhere. You didn't care before but now that it is in your mind you begin to notice these common things are everywhere. The human brain hallucinates reality. It happens with me and finding money on the ground. No million yet though.