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| n | a(n) |
|---|---|
| 1 | 43 |
| 2 | 4243 |
| 3 | 424243 |
| 4 | 42424243 |
| 5 | 4242424243 |
| 6 | 4242424242424243 |
| 7 | 424242424242424242424242424242424243 |
| 8 | 42424242424242424242424242424242424242424242424243 |
[43,4243,424243,42424243,4242424243, 4242424242424243, 424242424242424242424242424242424243, 42424242424242424242424242424242424242424242424243\ ] |