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| n | a(n) |
|---|---|
| 1 | 37 |
| 2 | 37 |
| 3 | 333667 |
| 4 | 9901 |
| 5 | 2906161 |
| 6 | 333667 |
| 7 | 10838689 |
| 8 | 99990001 |
| 9 | 440334654777631 |
| 10 | 2906161 |
| 11 | 1344628210313298373 |
| 12 | 999999000001 |
| 13 | 900900900900990990990991 |
| 14 | 10838689 |
| 15 | 4185502830133110721 |
| 16 | 9999999900000001 |
| 17 | 13168164561429877 |
| 18 | 440334654777631 |
| 19 | 3931123022305129377976519 |
| 20 | 39526741 |
[37,37,333667,9901,2906161,333667,10838689, 99990001,440334654777631,2906161, 1344628210313298373,999999000001, 900900900900990990990991,10838689, 4185502830133110721,9999999900000001, 13168164561429877,440334654777631, 3931123022305129377976519,39526741] |