[seqfan] Re: Is 0001 a 4-digit base 10 number ?
Charles Greathouse
charles.greathouse at case.edu
Fri Aug 19 14:56:38 CEST 2011
Also it seems to consider 0 as a 0-digit number -- not the usual
interpretation, I think.
Charles Greathouse
Analyst/Programmer
Case Western Reserve University
On Fri, Aug 19, 2011 at 4:39 AM, <franktaw at netscape.net> wrote:
> It's not the standard interpretation.
>
> There's nothing wrong with the sequence being defined that way, but either
> the definition should be modified (e.g., add "with leading zeros allowed"),
> or a similar comment should be added.
>
> Franklin T. Adams-Watters
>
> -----Original Message-----
> From: Giovanni Resta <giovanni.resta at iit.cnr.it>
>
> My question arises from the description of A126364
> ( http://oeis.org/A126364 ) :
>
> Number of base 10 n-digit numbers with adjacent digits differing by one
> or less.
> 1, 10, 28, 80, 230, 664,...
>
> It seems clear, from a(2)=28, that the author counts 00 and 01 among
> the 2-digit base 10 numbers.
>
> It seems to me a little unusual, but I may be wrong.
>
> What's your opinion ?
>
> giovanni
>
>
>
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