[seqfan] Re: A175723: Why not monotonic and why repetitions?

[zak seidov]

--- On Wed, 8/18/10, Richard Mathar <mathar at strw.leidenuniv.nl> wrote:

> From: Richard Mathar <mathar at strw.leidenuniv.nl>
> Subject: [seqfan] Re: A175723: Why not monotonic and why repetitions?
> To: seqfan at seqfan.eu
> Cc: shao.miller at yrdsb.edu.on.ca
> Date: Wednesday, August 18, 2010, 2:50 PM
> 
> http://list.seqfan.eu/pipermail/seqfan/2010-August/005697.html
> 
> zz> %S A175723
> 24,36,36,48,54,66,78,90,120,144,144,168,84,96,120,132,186
> zz> %N A175723 These are multiples of 6 without
> surrounding twin primes.
> zz> %C A175723 Why not monotonic and why repetitions?
> zz> 
> 
> Should probably called a duplicate of A054775 unless the
> author
> can explain where the difference might be. There is some
> low probability
> that this was supposed to be a 2D variant, where
> surrounding (like in
> dolby surround stereo ) is something more complicated ?
> Alternative is to call it an "obsc" and to leave it there.
> 
> 
But in A054775 we also see repetitions?!
Zak