: new keyword: probation

[franktaw at netscape.net]

OK; but that is quite explicitly not a mathematical sequence.  On the other hand, check out:
 
http://www.research.att.com/~njas/sequences/A028866
 
It's mathematical, but it combines 3 unrelated mathematical ideas: one intrinsically not very interesting (sorted digits), one way overdone in the OEIS (primes), and one fundamental but pretty trivial (squares); and it doesn't do anything interesting with them.  I can't imagine any possible mathematical use for this sequence.
 
Franklin T. Adams-Watters
 
P.S. I have sometimes thought that there ought to be a keyword for sequences (like A115380) which are "real-world" instead of mathematical.  Note that the origin of the sequence is not a perfect indicator of this: there are plenty of sequences from areas like crystallography that are purely mathematical in character.

-----Original Message-----
From: Olivier Gerard ogerard at ext.jussieu.fr

...
An example of sequence I don't care about as a mathematician is

http://www.research.att.com/~njas/sequences/A115380 

...
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