[seqfan] Re: Offsets of cons sequences

Joseph S. Myers jsm at polyomino.org.uk
Fri Aug 21 19:49:46 CEST 2009

On Fri, 21 Aug 2009, franktaw at netscape.net wrote:

> With this definition, each a(k) is multiplied by b^(-k) and the sum of 
> these is the number.  With the current definition, the k in a(k) 
> doesn't mean much of anything (for these sequences).
> Do people agree that this would be better?  Is there some (relatively 
> easy) way to make the conversion -- perhaps as part of the Wiki 
> conversion?

I agree that this would be better.

If you change the offsets you also need to change all associated b-files 
(supposing the b-files are consistent with the offsets assigned to the 
sequence).  One thing I'd like to see in the Wiki version is a better 
integration of b-files - it should be possible to add or extend a sequence 
by uploading a b-file instead of pasting in terms, all terms entered when 
submitting a sequence or extension should automatically be preserved in a 
b-file as needed and it should be possible to download the terms of any 
sequence in b-file format; it should also be possible to do offset-change 
operations (whether or not combined with adjustments to initial terms) and 
have any b-file change automatically.

Joseph S. Myers
jsm at polyomino.org.uk

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