[seqfan] Re: A167827 Prime numbers such that the hexadecimal representation use only the digits A, B, C, D, E, F (and not the decimal digits).

[Andrew Weimholt]

On 11/13/09, franktaw at netscape.net <franktaw at netscape.net> wrote:
> But "aa" is an English word, which I have seen in standard American
>  English dictionaries.  See http://en.wiktionary.org/wiki/aa.  I'm sure
>  there are others missing.
>
The problem is in the definition:

"American-English word found in a standard dictionary"

which one? what edition? There is not just one "standard dictionary"
for American-English.

Andrew