[seqfan] Re: min k: tau^n(k) = 2

[hv at crypt.org]

Thanks Neil, I'll add something.

For the avoidance of doubt, of course the subject is wrong; it should
rather be:
  let b(k) = min m: tau^m(k) = 2, m >= 0
  then a(n) = min k: b(k) = n

Hugo

Neil Sloane <njasloane at gmail.com> wrote:
:>  Can we add comments to a dead sequence? Is this observation reason
:enough to resurrect it?
:
:It's fine with me.
:
:Best regards
:Neil
:
:Neil J. A. Sloane, Chairman, OEIS Foundation.
:Also Visiting Scientist, Math. Dept., Rutgers University,
:Email: njasloane at gmail.com
:
:
:
:On Tue, Nov 15, 2022 at 1:59 PM <hv at crypt.org> wrote:
:
:> A036460 is described as "Erroneous version of A009287" and "dead".
:> (The history suggests it was created to be a placeholder, not that
:> it was originally proposed in error; however the "references"
:> comment in A009287 suggests otherwise.)
:>
:> Last night, though, I considered "min k: tau^n(k) = 2", and I think
:> A036460 would be a correct rendition of this sequence with offset 0.
:>
:> Can we add comments to a dead sequence? Is this observation reason
:> enough to resurrect it?
:>
:> Might "min k: tau^n(k) = 2" diverge from A009287 in later values?
:> It seems possible in theory, since a(7) is not in A002183.
:>
:> Hugo
:>
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