After that, I went with doubling and it worked 3 times with various sizes of number, so I went with that.
Double bonus points if you can guess what I was testing with the first sequence (which the given numbers do satisfy).
But, in case no-one guesses, the answer is (rot13):
erirefr nycunorgvpny beqre
After that, I went with doubling and it worked 3 times with various sizes of number, so I went with that.
Double bonus points if you can guess what I was testing with the first sequence (which the given numbers do satisfy).