[seqfan] Re: Numbers impossible to produce

Claudio Meller claudiomeller at gmail.com
Thu Apr 14 15:14:54 CEST 2011


Numbers that would be impossible to produce

1370  , 1425  , 1470  , 1471  , 1730  , 1740  , 1741  , 5240  , 5241  ,
6240  , 6241  , 10370  , 10425  , 10470  , 10471  , 10730  , 10740  , 10741
, 11425  , 11470  , 11471  , 11510  , 11740  , 11741  , 13070  , 13700  ,
13701  , 13702  , 13703  , 13704  , 13705  , 13706  , 13707  , 13708  ,
13709  , 14025  , 14026  , 14060  , 14070  , 14071  , 14080  , 14140  ,
14141  , 14150  , 14151  , 14152  , 14170  , 14190  , 14205  , 14240  ,
14241  , 14242  , 14250  , 14251  , 14252  , 14253  , 14254  , 14255  ,
14256  , 14257  , 14258  , 14259  , 14280  , 14290  , 14291  , 14340  ,
14341  , 14700  , 14701  , 14702  , 14703  , 14704  , 14705  , 14706  ,
14707  , 14708  , 14709  , 14710  , 14711  , 14712  , 14713  , 14714  ,
14715  , 14716  , 14717  , 14718  , 14719  , 15104  , 15105  , 15140  ,
15141  , 15142  , 15150  , 15151  , 15205  , 15240  , 15241  , 15250  ,
15251  , 15252  , 15705  , 15706  , 15825  , 15870  , 15871  , 15970  ,
15980  , 16040  , 16041  , 16405  , 16406  , 17030  , 17031  , 17040  ,
17041  , 17064  , 17065  , 17140  , 17141  , 17300  , 17301  , 17302  ,
17303  , 17304  , 17305  , 17306  , 17307  , 17308  , 17309  , 17400  ,
17401  , 17402  , 17403  , 17404  , 17405  , 17406  , 17407  , 17408  ,
17409  , 17410  , 17411  , 17412  , 17413  , 17414  , 17415  , 17416  ,
17417  , 17418  , 17419  , 17514  , 17515  , 17525  , 17570  , 17571  ,
17670  , 17850  , 17851  , 17950  , 17951  , 18040  , 18041  , 18075  ,
18076  , 18240  , 18241  , 18405  , 18406  , 18780  , 18950  , 18951  ,
19140  , 19141  , 19175  , 19240  , 19241  , 20370  , 20425  , 20470  ,
20471  , 20730  , 20740  , 20741  , 21425  , 21470  , 21471  , 21740  ,
21741  , 24150  , 24151  , 24205  , 24240  , 24241  , 24250  , 24251  ,
24252  , 24705  , 24706  , 25140  , 25141  , 25205  , 25240  , 25241  ,
25250  , 25251  , 25705  , 27040  , 27041  , 27405  , 27406  , 29240  ,
29241

2011/4/14 Claudio Meller <claudiomeller at gmail.com>

> 1370
>
>
> 2011/4/14 Eric Angelini <Eric.Angelini at kntv.be>
>
>> Hello SeqFans,
>>
>> The integer 126 produces 38 like this:
>>
>>  1 2 6
>>  3 8
>>
>> A digit on the base line is the addition
>> of the two closest digits above it.
>>
>> What does the integer 176 produce?
>> We decide that if the sum a+b of the said
>> digits is greater than 9, than we subtract
>> a from b (or b from a if a > b):
>>
>>  1 7 6
>>  8 1
>>
>> So, we managed to produce 38 and 81; but
>> what could be the smallest number that
>> would be impossible to produce, according
>> to the above rule?
>>
>> Best,
>> É.
>>
>>
>>
>>
>> _______________________________________________
>>
>> Seqfan Mailing list - http://list.seqfan.eu/
>>
>
>
>
> --
> Claudio
> http://grageasdefarmacia.blogspot.com
> http://todoanagramas.blogspot.com/
> http://simplementenumeros.blogspot.com/
>



-- 
Claudio
http://grageasdefarmacia.blogspot.com
http://todoanagramas.blogspot.com/
http://simplementenumeros.blogspot.com/



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