[seqfan] Re: Digit of a(n) is the difference of two digits of a(n)

Marc LeBrun mlb at well.com
Sun Dec 8 01:58:17 CET 2013


>="franktaw at netscape.net" <franktaw at netscape.net>
> If numbers have infinitely many zeros on the left, every number has 
this
> property.

Franklin T. Adams-Watters

Doh, right!

> Suppose we instead require only that every digit except the largest 
must be
> the difference of two digits? (There remains the question of 
how to handle
> having the largest digit present more than once.) This 
trivially includes all
> single-digit numbers, but it also includes 
things like 12, 24, 1235, etc.


Can't any of the digits be replicated any number of times?




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