[seqfan] Re: Is 0001 a 4-digit base 10 number ?

franktaw at netscape.net franktaw at netscape.net
Fri Aug 19 10:39:17 CEST 2011

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 ?



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