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

[Sean A. Irvine]

It's not perfect, but one way to achieve what you are after is to first
search for "1, 30, 30".

Choose any of the results, then use the "Sequence in context" links to scan
along until you reach a(4)>500.

Sean.


On Wed, 10 Feb 2021 at 13:52, andre maute <andre.maute at gmx.de> 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
>
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