[seqfan] Re: Rif: Using the OEIS on a very hot day

[David Sycamore]

Hello,
Neither do I (being English). I don’t get the fascination of Birthday sequences, although the birthday of the oeis site could perhaps be of more general interest.
Has anybody checked this?
Cheers 
David. 

> On 30 Jul 2018, at 09:28, jean-paul allouche <jean-paul.allouche at imj-prg.fr> wrote:
> 
> Hi
> 
> Since I do understand your disappointment [being French :-) ], I tried to find a case
> where the contrary happens. After a few unsuccessful trials I came accross
> 1, 30, 53 which is not (not yet?) in the OEIS, though 30, 1, 53 is.
> I am not sure my remark is worth a Fields medal though, smiles.
> 
> best wishes from this side of the Channel
> jean-paul
> 
> 
>> Le 30/07/2018 à 09:16, john.mason at lispa.it a écrit :
>> I tried my birth date (DD,MM,YY) and found nothing. Then I tried US format
>>  (MM,DD,YY) and found 5 sequences.
>> As a Briton, I find this very disappointing.
>> __________________________________
>> 
>> 
>> 
>> 
>> Da:     "Peter Luschny" <peter.luschny at gmail.com>
>> Per:    seqfan at list.seqfan.eu
>> Data:   28/07/2018 23:09
>> Oggetto:        [seqfan] Using the OEIS on a very hot day
>> Inviato da:     "SeqFan" <seqfan-bounces at list.seqfan.eu>
>> 
>> 
>> 
>> It's really, really hot here and I am sitting with my buddy
>> Hans on the veranda.
>> 
>> Asks Hans: "Does the OEIS has any real use?"
>> Me: "I don't know."
>> 
>> After a while Hans demands: "Give me your birthday!"
>> He took his tablet and entered the three numbers in
>> the search box of the OEIS.
>> 
>> Hans: "Ah, did you know that these are all prime numbers?"
>> Me: "No, I don't care about such things."
>> 
>> After scrolling for a while through the many pages the
>> database returned Hans said:
>> 
>> "But these are not ordinary prime numbers. They are all
>> related in a peculiar way to twin primes."
>> 
>> Me: "Really?", reluctantly I opened my eyes. Hans indeed found
>> a sequence which gives a formula relating them all in the
>> same way to twin primes.
>> 
>> Moreover, assuming that they represent the components of a
>> date, say between 1935 and today, they uniquely identify this
>> date. So I could trade in the date of my birthday for the
>> A-number of this sequence and save 2 digits.
>> 
>> Hans: "Well now, do you see that the OEIS has good use?"
>> Me: "Hm, maybe..."
>> 
>> Cheers, Peter
>> 
>> P.S. What's about your birthday in the OEIS?
>> 
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