I. I
u
1
= h−5.35 × 10
25
u
25
− 1.81 × 10
26
u
24
+ · · · + 7.92 × 10
25
b + 4.12 ×
10
26
, 3.95 × 10
23
u
25
+ 1.52 × 10
24
u
24
+ · · · + 2.64 × 10
25
a − 6.83 ×
10
25
, u
26
+ 3u
25
+ · · · − 15u + 3i
(i) Arc colorings
a
5
=
0
u
a
12
=
1
0
a
1
=
1
−u
2
a
9
=
−0.0149653u
25
− 0.0573920u
24
+ ··· − 5.13455u + 2.58629
0.675248u
25
+ 2.28036u
24
+ ··· + 14.2808u − 5.19791
a
10
=
−0.632801u
25
− 2.22531u
24
+ ··· − 19.2728u + 7.74671
0.825829u
25
+ 2.74001u
24
+ ··· + 17.1435u − 6.14114
a
4
=
−0.674011u
25
− 2.06149u
24
+ ··· − 0.724059u + 0.371443
0.0748759u
25
+ 0.392514u
24
+ ··· + 2.78632u − 1.21956
a
2
=
−0.757263u
25
− 2.08651u
24
+ ··· − 10.3107u + 2.23996
0.267117u
25
+ 0.978083u
24
+ ··· + 2.56900u − 2.07064
a
8
=
−0.690213u
25
− 2.33776u
24
+ ··· − 19.4154u + 7.78420
0.675248u
25
+ 2.28036u
24
+ ··· + 14.2808u − 5.19791
a
6
=
−0.851189u
25
− 2.96069u
24
+ ··· − 6.06101u + 2.28294
0.102302u
25
+ 0.506686u
24
+ ··· + 4.55063u − 0.691938
a
7
=
−0.424070u
25
− 1.10116u
24
+ ··· − 17.7829u + 3.92612
0.166509u
25
+ 0.680241u
24
+ ··· + 0.997296u + 0.529442
a
3
=
0.815413u
25
+ 2.85812u
24
+ ··· + 23.5628u − 11.7902
−1.40196u
25
− 4.61527u
24
+ ··· − 26.5088u + 11.0509
a
11
=
−0.547726u
25
− 1.21606u
24
+ ··· + 8.21515u − 3.50603
−0.407127u
25
− 1.15717u
24
+ ··· − 10.4849u + 2.55357
(ii) Obstruction class = −1
(iii) Cusp Shapes =
1260977761418218210095504584
237649321085197816953007317
u
25
+
1395857718298382707824957472
79216440361732605651002439
u
24
+
··· +
36059835826067669335416717074
237649321085197816953007317
u −
4085664600030892994473000376
79216440361732605651002439
2