Not a fibonacci series

[Greg Rundlett]

If I have four options:
a)
b)
c)
d)
and none are mutually exclusive, then there are 15 possible 
combinations.  Assigning a value to each:
a = 1, b=2, c=4, d=8, the unique combination can be assigned a code by 
summing the values
No. 	Combination
	Code
1
	a 	1
2
	b 	2
3
	c 	4
4
	d 	8
5
	a, b 	3
6
	a, c 	5
7
	a, d 	9
8
	b, c 	6
9
	b, d 	10
10
	c, d 	12
11
	a, b, c 	7
12
	a, b, d 	11
13
	a, c, d 	13
14
	b, c, d 	14
15
	a, b, c, d 	15



What is this type of problem referred to?  I know it's not a fibonacci 
series.  Anyone know of good examples of processing this info 
programmatically?

You may ask:  What the hell is a fibonacci series?  
http://www.textism.com/bucket/fib.html

Thanks,
Greg

-- 
Greg Rundlett
Chief Technology Officer
Knowledge Institute
creators of the Business Utility Zone Gateway
at www.buzgate.org
(603) 642-4720
greg at buzgate.org
At the source of every error which is blamed on the computer you will find
at least two human errors, including the error of blaming it on the computer.

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