s
q
u
a
r
e
c
o
l
o
r
C
o
l
o
r
i
t
e
r
a
t
i
o
n
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
d
e
c
i
m
a
l
e
x
p
a
n
s
i
o
n
o
f
ϕ
=
1
.
6
1
8
0
3
3
9
8
8
7
4
9
8
9
c
o
n
v
e
r
g
e
n
t
o
f
c
o
n
t
i
n
u
e
d
f
r
a
c
t
i
o
n
=
1
.
5
0
0
0
0
0
0
0
0
0
0
0
0
0
1
+
1
1
+
1
1