n | a(n) |
---|---|
1 | 3 |
2 | 5 |
3 | 7 |
4 | 11 |
5 | 13 |
6 | 17 |
7 | 19 |
8 | 331 |
9 | 661 |
10 | 881 |
11 | 991 |
12 | 20201 |
13 | 60601 |
14 | 90901 |
15 | 2002001 |
16 | 5005001 |
17 | 300030001 |
18 | 600060001 |
19 | 50000500001 |
20 | 2000002000001 |
21 | 8000008000001 |
22 | 9000009000001 |
23 | 3000000003000000001 |
24 | 200000000020000000001 |
25 | 80000000000800000000001 |
[3,5,7,11,13,17,19,331,661,881,991,20201,60601, 90901,2002001,5005001,300030001,600060001, 50000500001,2000002000001,8000008000001, 9000009000001,3000000003000000001, 200000000020000000001,80000000000800000000001] |