ChatGPT thinking it knows the first 20 busy beaver numbers. (Those are factorials.) When asked, it asserts that the first few values are the same by coincidence (the real sequence is 1,6,12,107, 47176870?,unknown) Later, it says they are 1, 4, 6, 21, 1073741824, 2, 2, 3, 3, 3.