Despite the fact that this system is counter-intuitive for most people, it's regular as hell and hence it's quite easy to see what the successor of any number will be...
46 = 10010101
Hey, like coding? Perhaps you should check out the red spider project. Feel free to call me Julian. J+ is just an abbreviation.
It is easy to see what the successor would be, but if it weren't a counting game, but a "Find the given number" game, it would be more difficult (without a table containing the Fibonacci series, at least).
In this number system, you have ones (1s) and zeros (0s). Beginning with "1" and then "10", all subsequent integers must be expressed in a way such that two ones are NEVER adjacent to eachother -- "11" is not ever allowed. Following these rules, how would you express the integer fifty?