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| n | a(n) |
|---|---|
| 0 | 13 |
| 1 | 373 |
| 2 | 30703 |
| 3 | 3007003 |
| 4 | 300070003 |
| 5 | 30000700003 |
| 6 | 3000007000003 |
| 7 | 300000070000003 |
| 8 | 30000000700000003 |
| 9 | 3000000007000000003 |
| 10 | 300000000070000000003 |
| 11 | 30000000000700000000003 |
| 12 | 3000000000007000000000003 |
| 13 | 300000000000070000000000003 |
| 14 | 30000000000000700000000000003 |
[13,373,30703,3007003,300070003,30000700003, 3000007000003,300000070000003,30000000700000003, 3000000007000000003,300000000070000000003, 30000000000700000000003,3000000000007000000000003, 300000000000070000000000003, 30000000000000700000000000003] |