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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 88 |
| 3 | 736 |
| 4 | 6016 |
| 5 | 48640 |
| 6 | 391168 |
| 7 | 3137536 |
| 8 | 25133056 |
| 9 | 201195520 |
| 10 | 1610088448 |
| 11 | 12882804736 |
| 12 | 103070826496 |
| 13 | 824600166400 |
| 14 | 6596935548928 |
| 15 | 52776021262336 |
| 16 | 422210317582336 |
| 17 | 3377691130593280 |
| 18 | 27021563404484608 |
| 19 | 216172644674830336 |
[1,10,88,736,6016,48640,391168,3137536,25133056, 201195520,1610088448,12882804736,103070826496, 824600166400,6596935548928,52776021262336, 422210317582336,3377691130593280, 27021563404484608,216172644674830336] |