Too obscure?
Maybe (too obscure)..., how about my idea of simply reversing the entire thing and say, “reverse”....
Or, put it a pattern of counting every 4th number, so start at the first number, count four, count four and when to the end, go back around again, still counting four.
To me the “reverse” is the easiest. Can simpy “reverse” overcome “intellectual property rights”?? That’s the question...