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| n | a(n) |
|---|---|
| 1 | 512 |
| 2 | 3984 |
| 3 | 31204 |
| 4 | 244558 |
| 5 | 1916364 |
| 6 | 15016660 |
| 7 | 117671951 |
| 8 | 922087441 |
| 9 | 7225552800 |
| 10 | 56620029719 |
| 11 | 443679243969 |
| 12 | 3476707292900 |
| 13 | 27243766224922 |
| 14 | 213484408044033 |
| 15 | 1672881498829333 |
| 16 | 13108837946186218 |
| 17 | 102721939611532514 |
[512,3984,31204,244558,1916364,15016660,117671951, 922087441,7225552800,56620029719,443679243969, 3476707292900,27243766224922,213484408044033, 1672881498829333,13108837946186218, 102721939611532514] |