[seqfan] Re: A001476

Charles Greathouse charles.greathouse at case.edu
Sat Feb 25 22:12:45 CET 2012


> I take it you are arguing that if "full" includes b-files, the meaning of
> "fini" and "full" becomes more or less redundant, since almost all "fini"
> sequences are "full" as well in the b-file sense.

I wasn't, I merely argued that the meaning of "full" should be unambiguous.

Charles Greathouse
Analyst/Programmer
Case Western Reserve University

On Sat, Feb 25, 2012 at 3:07 PM, David Wilson <davidwwilson at comcast.net> wrote:
> I take it you are arguing that if "full" includes b-files, the meaning of
> "fini" and "full" becomes more or less redundant, since almost all "fini"
> sequences are "full" as well in the b-file sense.
>
> Perhaps this is true, but I doubt it is universally so. It is not overly
> difficult to specify very long finite sequences for which a full b-file
> would not be practical. For example "Numbers not the sum of distinct 4th
> powers".
>
> My argument is that "full" meaning "all elements are in the OEIS (in the STU
> lines or b-file)" is arguably more useful than "all element are in the STU
> lines". At the very least, if "full" included b-files, then it would be easy
> to identify candidates for b-file work: "fini" but not "full".
>
>
> On 2/25/2012 3:37 PM, Alonso Del Arte wrote:
>>
>> Where would the line be drawn? Is there a finite sequence in the OEIS that
>> is nevertheless too long to be given in full in the B-file?
>>
>> When I wrote the first draft of
>> http://oeis.org/wiki/Clear-cut_examples_of_keywords I looked long and hard
>> for a finite sequence with a long B-file. A056757 was the best I could
>> find, with a little over fifty thousand terms total. A finite sequence
>> with
>> two or three hundred terms wouldn't have been a clear-cut example of
>> keyword:fini -keyword:full.
>>
>> Al
>>
>> On Sat, Feb 25, 2012 at 12:22 PM, David
>> Wilson<davidwwilson at comcast.net>wrote:
>>
>>> A001476 is an example of a finite sequence that is not complete in the
>>> STU
>>> lines, but is complete in the b-file.
>>>
>>> Perhaps we should mark such sequences as "full" since the data is
>>> available.



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