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| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 102 |
| 3 | 874 |
| 4 | 7589 |
| 5 | 65723 |
| 6 | 568370 |
| 7 | 4916340 |
| 8 | 42530527 |
| 9 | 367908385 |
| 10 | 3182471383 |
| 11 | 27528807013 |
| 12 | 238127592175 |
| 13 | 2059829147851 |
| 14 | 17817722472564 |
| 15 | 154124971684131 |
| 16 | 1333195242928609 |
| 17 | 11532260863126369 |
| 18 | 99755106819505532 |
| 19 | 862890740313446216 |
[12,102,874,7589,65723,568370,4916340,42530527, 367908385,3182471383,27528807013,238127592175, 2059829147851,17817722472564,154124971684131, 1333195242928609,11532260863126369, 99755106819505532,862890740313446216] |