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| n | a(n) |
|---|---|
| 0 | 30 |
| 1 | 91 |
| 2 | 5490 |
| 3 | 16561 |
| 4 | 999150 |
| 5 | 3014011 |
| 6 | 181839810 |
| 7 | 548533441 |
| 8 | 33093846270 |
| 9 | 99830072251 |
| 10 | 6022898181330 |
| 11 | 18168524616241 |
| 12 | 1096134375155790 |
| 13 | 3306571650083611 |
| 14 | 199490433380172450 |
| 15 | 601777871790600961 |
| 16 | 36306162740816230110 |
| 17 | 109520266094239291291 |
| 18 | 6607522128395173707570 |
[30,91,5490,16561,999150,3014011,181839810, 548533441,33093846270,99830072251,6022898181330, 18168524616241,1096134375155790,3306571650083611, 199490433380172450,601777871790600961, 36306162740816230110,109520266094239291291, 6607522128395173707570] |