Alright, I'm going to start a partial answer, we'll see if it goes anywhere.
Edit: Thanks to minitech for number 6! Thanks to Len for number 1! Thanks to Geobits for number 7!
Cleaning up the list and adding the numbers gives us:
EDIT: From Deusovi's answer below
"Deciphered the numbers based off VictorHenry's answer! All I had to do ...
I think the other answers about it being:
are correct, but at the same time there is zero context for the puzzle. You're just asking me to spot a pattern. As such, I propose that the answer could just as easily be:
My alternative answer is:
I think odd one is F10R. It should have been F9R.
All the numbers will follow a pattern if it's F9R.
Like the first number is 4. So second is
4+4 + 1 = 9.. Next
9+9 + 2 =20..
20+20 + 3=43..
43+43 + 4=90..
I am not sure though