416 CALCULATION OF THE MINIMUM N.G.F. OF THE BINARY SEVENTHIC. 
[696 
Calculation of the X’s. 
Ind. x even or odd according as suffix X is even or odd. 
°1 
2 3 
4 5 
6 7 
8 9 
i°n 
12 13 
14 
1 
1 
3 
— 
1 
— 
1 
- 
3 
- 
4 
- 
8 
— 
11 
1 
1 
2 
3 
5 
7 
11 
14 
- 
1 
- 
1 
- 
2 
- 
2 
- 
4 
- 
4 
- 
6 
X 0 = 
1 
0 
0 
0 
0 
0 
0 
0 
1 
1 
3 
-1 
— 
1 
- 
3 
— 
4 
- 
8 
- 
11 
- 
18 
3 
5 
7 
11 
14 
20 
26 
- 2 
- 
4 
- 
4 
- 
6 
- 
7 
* 
10 
- 
11 
0 
0 
0 
+ 
1 
0 
0 
0 
1 
1 
3 
5 
- 1 
— 
3 
- 
4 
- 
8 
- 
11 
- 
18 
- 
24 
- 
36 
7 
11 
14 
20 
26 
35 
44 
58 
- 6 
- 
7 
- 
10 
- 
11 
- 
16 
- 
17 
- 
23 
- 
26 
0 
+ 
1 
0 
+ 
1 
0 
■f* 
1 
0 
4" 
1 
1 
1 
3 
5 
- 4 
- 
8 
- 
11 
- 
18 
- 
24 
- 
36 
- 
47 
20 
26 
35 
44 
58 
71 
90 
- 16 
- 
17 
- 
23 
- 
26 
- 
33 
- 
37 
- 
47 
x,= 
0 
+ 
1 
+ 
1 
+ 
1 
+ 
2 
+ 
1 
+ 
1 
1 
1 
3 
5 
9 
- 8 
— 
11 
- 
18 
- 
24 
- 
36 
- 
47 
- 
66 
- 
84 
35 
44 
58 
71 
90 
110 
136 
163 
- 26 
- 
33 
- 
37 
- 
47 
- 
52 
- 
64 
- 
72 
- 
86 
X\ ~ 
1 
0 
+ 
3 
+ 
1 
+ 
3 
+ 
2 
+ 
3 
+ 
2 
1 
1 
3 
5 
9 
- 18 
- 
24 
- 
36 
- 
47 
- 
66 
- 
84 
- 
113 
71 
90 
110 
136 
163 
199 
235 
- 52 
- 
64 
- 
72 
- 
86 
- 
96 
- 
115 
- 
127 
X 5 = 
1 
"f* 
2 
+ 
3 
+ 
4 
+ 
4 
+ 
5 
+ 
4