N
1
0
0
G
o
l
d
e
n
R
a
t
i
o
ϕ
l
i
m
N
∞
1
+
1
+
1
+
…
︸
N
N
=
1
0
0
ϕ
≈
1
.
6
1
8
0
3
3
9
8
8
7
4
9
8
9
4
8
4
8
2
0
4
5
8
6
8
3
4
3
6
5
6
3
8
1
1
7
7
2
0
3
0
9
1
7
9
8
0
5
7
6
2
5
2
s
i
g
n
i
f
i
c
a
n
t
f
i
g
u
r
e
s