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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 97 |
| 3 | 997 |
| 4 | 9973 |
| 5 | 99991 |
| 6 | 999983 |
| 7 | 294001 |
| 8 | 505447 |
| 9 | 584141 |
| 10 | 604171 |
| 11 | 929573 |
| 12 | 971767 |
| 13 | 9999991 |
| 14 | 1062599 |
| 15 | 1282529 |
| 16 | 1524181 |
| 17 | 2017963 |
| 18 | 2474431 |
| 19 | 2690201 |
| 20 | 3070663 |
| 21 | 3085553 |
| 22 | 3326489 |
| 23 | 4393139 |
| 24 | 5152507 |
| 25 | 5285767 |
| 26 | 5564453 |
| 27 | 5575259 |
| 28 | 5974249 |
| 29 | 6173731 |
| 30 | 6191371 |
| 31 | 6236179 |
| 32 | 6463267 |
| 33 | 6712591 |
| 34 | 7204777 |
| 35 | 7469789 |
| 36 | 7469797 |
| 37 | 7810223 |
| 38 | 7858771 |
| 39 | 7982543 |
| 40 | 8090057 |
[7,97,997,9973,99991,999983,294001,505447,584141, 604171,929573,971767,9999991,1062599,1282529, 1524181,2017963,2474431,2690201,3070663,3085553, 3326489,4393139,5152507,5285767,5564453,5575259, 5974249,6173731,6191371,6236179,6463267,6712591, 7204777,7469789,7469797,7810223,7858771,7982543, 8090057] |