[seqfan] RE : Re: Sum divides concatenation

[Eric Angelini]

Waow, that big! Thanks, Jack!
Best,
E.

-------- Message d'origine--------
De: seqfan-bounces at list.seqfan.eu de la part de Jack Brennen
Date: lun. 28/09/2009 18:35
À: Sequence Fanatics Discussion list
Objet : [seqfan] Re: Sum divides concatenation
 
The next term would be 250488, if that's any help:

   126250488 == (1+2+6+250488) * 504

Eric Angelini wrote:
> Hello SeqFans,
> I don't know how to find more terms -- thus I don't know
> if this is old hat in Neil's database:
> 
> 1, 2, 6, ...
> 
> The sum of the first n integers divides the concatanion of
> the first n integers; always prolong the seq with the smal-
> lest _natural_ number not yet used:
> 
> 1 divides 1  --> HIT
> 1+2   (=3) divides 12 --> HIT
> 1+2+3 (=6) does not divide 123
> 1+2+4 (=7) does not divide 124
> 1+2+5 (=8) does not divide 125
> 1+2+6 (=9) divides 126 --> HIT
> etc.
> 
> Best,
> É.
> 
> 
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> 
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> 
> 



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