Bibliography:

1. ​ On Non-Computable Functions

2. ​ https://www.sligocki.com/2021/07/17/bb-collatz.html

3. ​ Remembering John Conway’s FRACTRAN, a ridiculous, yet surprisingly deep language

4. ​ https://nickdrozd.github.io/2021/09/25/spaghetti-code-conjecture-false.html

5. ​ https://nickdrozd.github.io/2021/10/31/busy-beaver-derived.html

6. Wikipedia Bibliography:

   1. ​ https://en.wikipedia.org/wiki/Busy_beaver

   2. ​ Ackermann Function