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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 16 |
| 3 | 195 |
| 4 | 2144 |
| 5 | 22409 |
| 6 | 227760 |
| 7 | 2277211 |
| 8 | 22542016 |
| 9 | 221762385 |
| 10 | 2173135184 |
| 11 | 21242657459 |
| 12 | 207321273120 |
| 13 | 2021338264921 |
| 14 | 19694814578416 |
| 15 | 191815399094475 |
| 16 | 1867662696228224 |
| 17 | 18181863794888609 |
| 18 | 176982396248296080 |
| 19 | 1722624648484532131 |
| 20 | 16766068204606453216 |
[1,16,195,2144,22409,227760,2277211,22542016, 221762385,2173135184,21242657459,207321273120, 2021338264921,19694814578416,191815399094475, 1867662696228224,18181863794888609, 176982396248296080,1722624648484532131, 16766068204606453216] |