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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 10 |
| 4 | 100 |
| 5 | 1000 |
| 6 | 10000 |
| 7 | 100000 |
| 8 | 550501 |
| 9 | 1000000 |
| 10 | 5505010 |
| 11 | 10000000 |
| 12 | 55050100 |
| 13 | 55055001 |
| 14 | 100000000 |
| 15 | 550501000 |
| 16 | 550550010 |
| 17 | 1000000000 |
| 18 | 1000550501 |
| 19 | 1005055001 |
| 20 | 5505010000 |
| 21 | 5505500100 |
| 22 | 10000000000 |
| 23 | 10005505010 |
| 24 | 10050550010 |
| 25 | 55050100000 |
| 26 | 55055001000 |
| 27 | 100000000000 |
| 28 | 100000550501 |
| 29 | 100055050100 |
| 30 | 100505500100 |
[0,1,10,100,1000,10000,100000,550501,1000000, 5505010,10000000,55050100,55055001,100000000, 550501000,550550010,1000000000,1000550501, 1005055001,5505010000,5505500100,10000000000, 10005505010,10050550010,55050100000,55055001000, 100000000000,100000550501,100055050100, 100505500100] |