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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 90 |
| 3 | 810 |
| 4 | 7210 |
| 5 | 64250 |
| 6 | 570330 |
| 7 | 5065530 |
| 8 | 44906970 |
| 9 | 398227610 |
| 10 | 3527691690 |
| 11 | 31255491850 |
| 12 | 276741169130 |
| 13 | 2450591960890 |
| 14 | 21690684337690 |
| 15 | 192003889675210 |
| 16 | 1699056192681930 |
| 17 | 15035937610909770 |
| 18 | 133030135015071770 |
| 19 | 1177032340670878170 |
| 20 | 10412322608416261050 |
[1,10,90,810,7210,64250,570330,5065530,44906970, 398227610,3527691690,31255491850,276741169130, 2450591960890,21690684337690,192003889675210, 1699056192681930,15035937610909770, 133030135015071770,1177032340670878170, 10412322608416261050] |