Reflections on Valentin's 2023 Pi day special

[EdS2]

Nice to see Valentin has tackled this subsidiary challenge on his Pi Day thread.

Looks like a nice solution, probably very amenable to porting to BBC Basic, but I have a couple of ideas I'd like to follow before doing that.

(I need at least one large array, for the PRIM function, but I think I can re-use it for the Moebius values. On a plain original BBC Model B Micro with a floppy disk, I have about 25k bytes available. One can push that to nearly 30k. With a Master and a special (slow) version of BBC Basic (BAS128) one can get nearly 64k, whereas a Master Turbo runs faster than the original and offers 45k. Those are about the limits with the 6502 version of BBC Basic.)