n | a(n) |
---|---|
1 | 2 |
2 | 7 |
3 | 17 |
4 | 37 |
5 | 47 |
6 | 97 |
7 | 107 |
8 | 227 |
9 | 277 |
10 | 577 |
11 | 587 |
12 | 647 |
13 | 1367 |
14 | 1657 |
15 | 1667 |
16 | 3457 |
17 | 3467 |
18 | 3517 |
19 | 3527 |
20 | 3877 |
21 | 10007 |
22 | 20747 |
23 | 20807 |
24 | 21107 |
25 | 21157 |
26 | 60037 |
27 | 124477 |
28 | 124847 |
[2,7,17,37,47,97,107,227,277,577,587,647,1367, 1657,1667,3457,3467,3517,3527,3877,10007,20747, 20807,21107,21157,60037,124477,124847] |