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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 10 |
| 4 | 1 |
| 5 | 91 |
| 6 | 910 |
| 7 | 1 |
| 8 | 820 |
| 9 | 7462 |
| 10 | 74620 |
| 11 | 746200 |
| 12 | 1 |
| 13 | 7381 |
| 14 | 605242 |
| 15 | 6052420 |
| 16 | 55077022 |
| 17 | 550770220 |
| 18 | 5507702200 |
| 19 | 1 |
| 20 | 66430 |
| 21 | 49031983 |
| 22 | 441826660 |
| 23 | 490319830 |
| 24 | 40206226060 |
| 25 | 365876657146 |
| 26 | 402062260600 |
| 27 | 3658766571460 |
| 28 | 36587665714600 |
| 29 | 365876657146000 |
| 30 | 1 |
| 31 | 597871 |
[1,1,10,1,91,910,1,820,7462,74620,746200,1,7381, 605242,6052420,55077022,550770220,5507702200,1, 66430,49031983,441826660,490319830,40206226060, 365876657146,402062260600,3658766571460, 36587665714600,365876657146000,1,597871] |