Decrypt Flopy

[Moonwalker77]

Hey Guys,

i have been stuck at the decrypt the floppy part of COD Coldwar for ages.
i’ve googled and googled on how to solve the numbers part...

Now i know that everyone will have a different set of numbers, but is anyone able to help me a little please?

thank you in advance!

my numbers are :
Red : 58 59 61 ? 68
Blue : 13 ? 27 34 41

if you can manage to work this out, please do explain how you have worked it out.

 

[LikeALostPuppy]

64
20

It's mathematical patterns