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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 222 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 666666 |
| 8 | 0 |
| 9 | 888888888 |
| 10 | 0 |
| 11 | 1001 |
| 12 | 0 |
| 13 | 121212 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 666111 |
| 18 | 0 |
| 19 | 1881 |
| 20 | 0 |
| 21 | 202020 |
| 22 | 1122 |
| 23 | 2222222222222222222222 |
| 24 | 233232 |
| 25 | 0 |
| 26 | 52 |
| 27 | 222222226266666666 |
| 28 | 2772 |
| 29 | 228288 |
| 30 | 0 |
| 31 | 30300330 |
| 32 | 0 |
| 33 | 222222333333 |
| 34 | 0 |
| 35 | 0 |
| 36 | 0 |
| 37 | 3663 |
| 38 | 0 |
| 39 | 383838 |
| 40 | 0 |
| 41 | 4000004444 |
[0,0,222,0,0,0,666666,0,888888888,0,1001,0,121212, 0,0,0,666111,0,1881,0,202020,1122, 2222222222222222222222,233232,0,52, 222222226266666666,2772,228288,0,30300330,0, 222222333333,0,0,0,3663,0,383838,0,4000004444] |