n | a(n) |
---|---|
1 | 2 |
2 | 3 |
3 | 5 |
4 | 7 |
5 | 23 |
6 | 223 |
7 | 227 |
8 | 337 |
9 | 557 |
10 | 577 |
11 | 2333 |
12 | 2357 |
13 | 2377 |
14 | 2557 |
15 | 2777 |
16 | 33377 |
17 | 222337 |
18 | 222557 |
19 | 233357 |
20 | 233777 |
21 | 235577 |
22 | 2222333 |
23 | 2233337 |
24 | 2235557 |
25 | 3337777 |
26 | 3355777 |
27 | 5555777 |
28 | 22222223 |
29 | 22233577 |
30 | 23333357 |
31 | 23377777 |
32 | 25577777 |
33 | 222222227 |
34 | 222222557 |
35 | 222222577 |
[2,3,5,7,23,223,227,337,557,577,2333,2357,2377, 2557,2777,33377,222337,222557,233357,233777, 235577,2222333,2233337,2235557,3337777,3355777, 5555777,22222223,22233577,23333357,23377777, 25577777,222222227,222222557,222222577] |