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| n | a(n) |
|---|---|
| 1 | 55 |
| 2 | 66 |
| 3 | 666 |
| 4 | 2211 |
| 5 | 222111 |
| 6 | 339900 |
| 7 | 1188111 |
| 8 | 22221111 |
| 9 | 88000011 |
| 10 | 111221155 |
| 11 | 553330011 |
| 12 | 2200066611 |
| 13 | 2222211111 |
| 14 | 2233558866 |
| 15 | 55666666611 |
| 16 | 77771144466 |
| 17 | 222222111111 |
| 18 | 880022001111 |
| 19 | 888000000111 |
| 20 | 1111226666655 |
| 21 | 5533355001111 |
[55,66,666,2211,222111,339900,1188111,22221111, 88000011,111221155,553330011,2200066611, 2222211111,2233558866,55666666611,77771144466, 222222111111,880022001111,888000000111, 1111226666655,5533355001111] |