Since you can't write down this number, how can you generate a second number using this number? You'll never finish generating the first number in order to star

Since you can't write down this number, how can you generate a second number using this number? You'll never finish generating the first number in order to start the second. You can come up with a bunch of procedures that generate numbers indefinitely, and you can even define relationships between those procedures, but a procedure is not a number.