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| n | a(n) |
|---|---|
| 9 | 4 |
| 10 | 127 |
| 11 | 1856 |
| 12 | 20074 |
| 13 | 191967 |
| 14 | 1753407 |
| 15 | 15845905 |
| 16 | 144101608 |
| 17 | 1329935983 |
| 18 | 12512797900 |
| 19 | 120312183453 |
| 20 | 1183814298898 |
| 21 | 11928314725101 |
| 22 | 123117825217659 |
| 23 | 1301722909447207 |
| 24 | 14096302961791594 |
| 25 | 156301760858165116 |
| 26 | 1773962132569829592 |
| 27 | 20600385809700410195 |
[4,127,1856,20074,191967,1753407,15845905, 144101608,1329935983,12512797900,120312183453, 1183814298898,11928314725101,123117825217659, 1301722909447207,14096302961791594, 156301760858165116,1773962132569829592, 20600385809700410195] |