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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 5 |
| 5 | 10 |
| 6 | 19 |
| 7 | 20 |
| 8 | 25 |
| 9 | 38 |
| 10 | 50 |
| 11 | 76 |
| 12 | 95 |
| 13 | 100 |
| 14 | 190 |
| 15 | 380 |
| 16 | 475 |
| 17 | 950 |
| 18 | 1900 |
[1,2,4,5,10,19,20,25,38,50,76,95,100,190,380,475, 950,1900] |