Find the total number of unique combinations for input values of x = 4 and n = 12
There exists a set of values, r, with values binary increasing (2^0, 2^1, ... 2^(n-1))
A combination is a set of x values where each value is generated by creating x subsets of r with all values within a subset being summed 
The x subsets should use all values in r exactly once.

Example Case:
Input:
x = 3
n = 5

Given the input above we can create a set r that consists of the following n values 
[2^0, 2^1, 2^2, 2^3, 2^4]
OR
[1, 2, 4, 8, 16]

Each combination is formed via x subsets of the set [1, 2, 4, 8, 16]
[16], [2,8], [1, 4]
[1, 2, 4], [8], [16]
[1, 4], [2, 8], [16]
...

This renders sets of size x that are the sums of the elements of each set
16, 10, 5
7, 8, 16
5, 10, 16
...

Note: combination 1 and combination 3 are the duplicates and should not be counted twice as they both consist of 5, 10, and 16

All possible unique combinations for x = 3 and n = 5:
3	8	20
4	8	19
1	12	18
4	9	18
5	8	18
2	12	17
4	10	17
6	8	17
1	14	16
2	13	16
3	12	16
4	11	16
5	10	16
6	9	16
7	8	16
1	2	28
1	4	26
2	4	25
1	6	24
2	5	24
3	4	24
1	8	22
2	8	21
1	10	20
2	9	20

Final Output:
25 
(There are 25 combinations generated above)

*IMPORTANT*
The answer should be formatted as rgbctf{[output value here]} with your output value replacing [output value here]
