Request for more Python programs

[Alec Mihailovs]

From: "N. J. A. Sloane" <njas at research.att.com>
>
> Dear Seqfans,  There are very few Python programs in the OEIS.
> I would like to get more - even for the simplest sequences,
> and especially for all the important sequences, whenever appropriate.

I certainly agree. For a long time, I used Maple primarily. Last year, I 
switched to Mathematica - and it had its pluses and minuses, comparing to 
Maple, but my overall impression is that Mathematica is neater, faster, and 
less buggy. However, recently, influenced by SAGE, I started doing most of 
my mathematical programming in Python - and it works much better than in 
both Maple and Mathematica - clean coding, easy to use and maintain, fast, 
etc.

Here is the Python program for A010892,

%o A010892 # Python program from Alec Mihailovs, January 1 2007.
%o A010892 def A010892(n): [1,1,0,-1,-1,0][n%6]

Alec