OEIS on vacation in December
Henry
se16 at btinternet.com
Tue Dec 5 21:39:51 CET 2006
Jonathan Post wrote:
> Beautiful is, as I've said, subjective. It partly depends on what one
> does with it. It partly depends on the depth of the mathematical
> theory. Even for "base" sequences. To me, for insdtance, this is
> slightly pretty, although spawned from something apparently dull and base.
>
> Partial sums of A124167
> 90, 1080, 11070, 111060, 1111050, 11111040, 111111030, * *1111111020,
> 11111111010, 111111111000, 1111111110990,* *...
>
> example:
>
> **a(8) = 90 + 990 + 9990 + 99990 + 999990 + 9999990 + 99999990 +
> 999999990 = 1111111020.
>
> How does this generalize over bases other than 10?
>
> -- Jonathan Vos Post
It is not particularly interesting because it is simply ten times
A099676. The final zeros do not add to its interest.
Henry Bottomley
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