n | a(n) |
---|---|
1 | 3135313 |
2 | 3732373 |
3 | 3836383 |
4 | 7276727 |
5 | 7278727 |
6 | 7576757 |
7 | 7873787 |
8 | 7977797 |
9 | 11311511311 |
10 | 11411311411 |
11 | 13331113331 |
12 | 13331713331 |
13 | 13831913831 |
14 | 13931413931 |
15 | 17471317471 |
16 | 19391319391 |
17 | 31513531513 |
18 | 31513831513 |
19 | 31513931513 |
20 | 37273937273 |
21 | 37573237573 |
22 | 37573337573 |
[3135313,3732373,3836383,7276727,7278727,7576757, 7873787,7977797,11311511311,11411311411, 13331113331,13331713331,13831913831,13931413931, 17471317471,19391319391,31513531513,31513831513, 31513931513,37273937273,37573237573,37573337573] |