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ppad...@gmail.com
Jun 6, 2025, 10:19:11 PM6/6/25
to fo...@jsoftware.com
The Moebius essay (https://code.jsoftware.com/wiki/Essays/Mobius_Function) link for OEIS does not link to the actual Moebius sequence OEIS page. I was going to change it but I got a message that I do not have permission to edit. The link goes to the toplevel oeis.org page instead of https://oeis.org/A008683.
The text is also a little sparse, it could state why it has four different functions that do the same thing in just slightly different ways. E.g. a quick console session:
1e6 timespacex 'mobius 1000000'
2.19494e_7 1344
1e6 timespacex 'mobius2 1000000'
2.09583e_7 1408
1e6 timespacex 'mobius1 1000000'
4.22649e_7 2496
1e6 timespacex 'mobius0 1000000'
4.2859e_7 2496
Mobius2 is fastest but slightly less space efficient as plain mobius.
Regards
Pete
The text is also a little sparse, it could state why it has four different functions that do the same thing in just slightly different ways. E.g. a quick console session:
1e6 timespacex 'mobius 1000000'
2.19494e_7 1344
1e6 timespacex 'mobius2 1000000'
2.09583e_7 1408
1e6 timespacex 'mobius1 1000000'
4.22649e_7 2496
1e6 timespacex 'mobius0 1000000'
4.2859e_7 2496
Mobius2 is fastest but slightly less space efficient as plain mobius.
Regards
Pete
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