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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 125 |
| 3 | 1760 |
| 4 | 26650 |
| 5 | 423752 |
| 6 | 6978510 |
| 7 | 117998400 |
| 8 | 2036685765 |
| 9 | 35738059500 |
| 10 | 635627275767 |
| 11 | 11433154297760 |
| 12 | 207621482341000 |
| 13 | 3801296492623560 |
| 14 | 70092637731997100 |
| 15 | 1300500163756675200 |
| 16 | 24262157874835233000 |
| 17 | 454847339247972377850 |
| 18 | 8564398318045559667475 |
[1,10,125,1760,26650,423752,6978510,117998400, 2036685765,35738059500,635627275767, 11433154297760,207621482341000,3801296492623560, 70092637731997100,1300500163756675200, 24262157874835233000,454847339247972377850, 8564398318045559667475] |