Here is a sequence. What letter comes next?
F, C, R, B, C, B, O, T, B, ...
I expect it will take some time to answer this.
These are the
First letters of the last ten US presidents' last names:
38 Gerald Rudolph Ford
39 Jimmy Earl Carter
40 Ronald Wilson Reagan
41 George Herbert Walker Bush
42 Bill Jefferson Clinton
43 George Walker Bush
44 Barack Hussein Obama
45 Donald John Trump
46 Joe Robinette Biden
The next president has not yet been elected, so it will take "some time" before the sequence continues...