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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 9 |
| 3 | 121 |
| 4 | 2161 |
| 5 | 48081 |
| 6 | 1279801 |
| 7 | 39631369 |
| 8 | 1398961761 |
| 9 | 55422807841 |
| 10 | 2434261023721 |
| 11 | 117366299630361 |
| 12 | 6161301265353169 |
| 13 | 349768597919934961 |
| 14 | 21347094823271661081 |
| 15 | 1393695557886847095721 |
| 16 | 96910923898115717350081 |
| 17 | 7149718240571434690591809 |
[1,1,9,121,2161,48081,1279801,39631369,1398961761, 55422807841,2434261023721,117366299630361, 6161301265353169,349768597919934961, 21347094823271661081,1393695557886847095721, 96910923898115717350081,7149718240571434690591809] |