[seqfan] Re: searching on oeis.org for sequences with partial information

[andre maute]

This misses the whole point of my question and ignores
the situation when I started this thread.

At the beginning of this thread I only had three numbers available
1, 3, 30

Essentially your suggestion results in the reduced "sequence" of two numbers

1, 10

and a search on oeis.org with these two numbers gives at the moment 7443 results.

Quite a lot to check these by hand.

Andre

On 2/11/21 10:33 AM, Hugo Pfoertner wrote:
> Perhaps the general recommendation to leave out initial terms, especially 0
> and 1, in a search is applicable here. This then gives a hit to A203478,
> for example. In addition, you should always try a search with common
> factors divided out, in this case factor 3, which then e.g. results in a
> hit for "1, 10, 360" on A301310. My search program, with which this is
> possible automatically and which I presented here some time ago (
> http://list.seqfan.eu/pipermail/seqfan/2020-October/021017.html ), seems to
> be used by no one except myself.
>
> On Thu, Feb 11, 2021 at 7:28 AM andre maute <andre.maute at gmx.de> wrote:
>
>> FYI, i have now the fourth term of this sequence
>>
>> A(1) = 1, A(2) = 3, A(3) = 30, A(4) = 1080
>>
>> The fifth term is out of scope at the moment,
>> because my C++ program needed already 1500 minutes for A(4).
>>
>> A(d) somehow counts the number of ways to reconnect
>> the d-simplices of a particular dissected d-hypercube.
>>
>> Andre
>>
>> On 2/9/21 9:30 PM, andre maute wrote:
>>> Hello list,
>>>
>>> I have sometimes the following problem when doing some type of
>> enumeration.
>>> I wonder if there is already a feature on oeis.org which would help
>> here.
>>>
>>> Suppose you have written a program generating
>>> a sequence A(n), which does some intermediate (debug) output.
>>>
>>> The computation of the A(n) gets slower and slower with the next n,
>>> but due to the availability of the intermediate output it is possible
>>> to extract perhaps some lower bound for a particular A(n).
>>>
>>> So you have e.g.
>>> A(1) = 1, A(2) = 3, A(3) = 30, A(4) > 500
>>>
>>> Would it possible to use this information, for an oeis.org search?
>>>
>>> For this sequence I would like to enter:
>>> "1, 3, 30, >500"
>>>
>>> Best Regards
>>> Andre
>>>
>>> --
>>> Seqfan Mailing list - http://list.seqfan.eu/
>>
>>
>> --
>> Seqfan Mailing list - http://list.seqfan.eu/
>>
>
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