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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 24 |
| 3 | 200 |
| 4 | 775 |
| 5 | 2000 |
| 6 | 10000 |
| 7 | 20000 |
| 8 | 100000 |
| 9 | 200000 |
| 10 | 1000000 |
| 11 | 2000000 |
| 12 | 10000000 |
| 13 | 20000000 |
| 14 | 100000000 |
| 15 | 200000000 |
| 16 | 1000000000 |
| 17 | 2000000000 |
| 18 | 10000000000 |
| 19 | 20000000000 |
| 20 | 100000000000 |
| 21 | 200000000000 |
| 22 | 1000000000000 |
| 23 | 2000000000000 |
| 24 | 10000000000000 |
| 25 | 20000000000000 |
| 26 | 100000000000000 |
[0,24,200,775,2000,10000,20000,100000,200000, 1000000,2000000,10000000,20000000,100000000, 200000000,1000000000,2000000000,10000000000, 20000000000,100000000000,200000000000, 1000000000000,2000000000000,10000000000000, 20000000000000,100000000000000] |