[seqfan] Re: 010 is a permutation of 101 ?

Arthur O'Dwyer arthur.j.odwyer at gmail.com
Thu Feb 23 15:00:17 CET 2023


On Thu, Feb 23, 2023 at 8:34 AM M. F. Hasler <oeis at hasler.fr> wrote:

> In  https://oeis.org/A272653
> I can read, but not understand :
> "since v = 010 is a permutation of u = 101".
> Could this be explained differently?
>

I think it's relevant that 32_10 is not actually equal to 101010_2.
32 (base 10) is actually 100010 (base 2), and v=010 *is* a permutation of
u=100.
So I suspect (but have not verified) that only the example is wrong, and
everything else is correct.

HTH,
Arthur


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