n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 7 |
4 | 111 |
5 | 343 |
6 | 757 |
7 | 10101 |
8 | 15751 |
9 | 30103 |
10 | 1001001 |
11 | 1255521 |
12 | 1403041 |
13 | 1837381 |
14 | 3372733 |
15 | 3521253 |
16 | 3847483 |
17 | 100010001 |
18 | 141979141 |
19 | 10000100001 |
20 | 14181118141 |
21 | 16112621161 |
22 | 35297579253 |
23 | 35475157453 |
24 | 37011411073 |
25 | 38735553783 |
26 | 1000001000001 |
27 | 1020505050201 |
[1,3,7,111,343,757,10101,15751,30103,1001001, 1255521,1403041,1837381,3372733,3521253,3847483, 100010001,141979141,10000100001,14181118141, 16112621161,35297579253,35475157453,37011411073, 38735553783,1000001000001,1020505050201] |