[seqfan] Re: OEIS historic sequences

israel at math.ubc.ca israel at math.ubc.ca
Mon Jun 1 17:02:15 CEST 2015


Crossrefs change much too often to base a sequence on them.

Cheers,
Robert 

On Jun 1 2015, David Corneth wrote:

>Hi all,
>
>OEIS has some sequences related to itself, for example, A211096 and
>A211099, but wouldn't it be nice to add some more? I don't know if the
>information can be found, but how about the following sequences, or even if
>they are already in OEIS:
>
>- Number of sequences in OEIS on the n-th days of its existence.
>- Days after "birth" of OEIS that sequence A(n) was added
>
>Maybe also:
>
>- Number of crossrefs of sequence A(n)
>(to give an idea if it's much used and maybe interesting (though
>interesting is quite arbitrary))
>
>- Flattened: Shortest path from path A(m) to A(n) via crossrefs
>(This might need some criterion due to for example "adjacent sequence"
>which might be unrelated)
>For example, A010000 refs to A070864 which in turn refs to A076566 but
>A010000 doesn't so R(10000, 75566) is 2.
>
>Any thoughts or ideas?
>
>Best,
>David
>
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>
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>



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