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

Richard Mathar mathar at strw.leidenuniv.nl
Wed Aug 18 20:50:49 CEST 2010


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?

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.

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