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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 5 |
| 3 | 11 |
| 4 | 101 |
| 5 | 313 |
| 6 | 727 |
| 7 | 10301 |
| 8 | 19891 |
| 9 | 30103 |
| 10 | 70207 |
| 11 | 1003001 |
| 12 | 1936391 |
| 13 | 3001003 |
| 14 | 7014107 |
| 15 | 100030001 |
| 16 | 193191391 |
| 17 | 300020003 |
| 18 | 700020007 |
| 19 | 10000500001 |
| 20 | 19301110391 |
| 21 | 30000500003 |
| 22 | 70005450007 |
| 23 | 1000008000001 |
| 24 | 1930022200391 |
| 25 | 3000002000003 |
| 26 | 7000005000007 |
| 27 | 100000323000001 |
[2,5,11,101,313,727,10301,19891,30103,70207, 1003001,1936391,3001003,7014107,100030001, 193191391,300020003,700020007,10000500001, 19301110391,30000500003,70005450007,1000008000001, 1930022200391,3000002000003,7000005000007, 100000323000001] |