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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 11111110 |
| 4 | 13477450 |
| 5 | 20483494 |
| 6 | 22705717 |
| 7 | 24588560 |
| 8 | 25411435 |
| 9 | 26522546 |
| 10 | 27150160 |
| 11 | 27150161 |
| 12 | 27777775 |
| 13 | 28261271 |
| 14 | 28744768 |
| 15 | 28888885 |
| 16 | 28888886 |
| 17 | 29372382 |
| 18 | 29372383 |
| 19 | 29516500 |
| 20 | 29855879 |
| 21 | 31111109 |
| 22 | 31738723 |
| 23 | 32078101 |
| 24 | 32222218 |
| 25 | 32705716 |
| 26 | 32849833 |
| 27 | 33189212 |
| 28 | 33333331 |
[0,1,11111110,13477450,20483494,22705717,24588560, 25411435,26522546,27150160,27150161,27777775, 28261271,28744768,28888885,28888886,29372382, 29372383,29516500,29855879,31111109,31738723, 32078101,32222218,32705716,32849833,33189212, 33333331] |