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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 12 |
| 2 | 123 |
| 3 | 1238 |
| 4 | 123815 |
| 5 | 12381548 |
| 6 | 12381548105 |
| 7 | 12381548105384 |
| 8 | 12381548105384945 |
| 9 | 123815481053849453840 |
| 10 | 12381548105384945384010395 |
| 11 | 1238154810538494538401039546080 |
| 12 | 1238154810538494538401039546080135135 |
[1,12,123,1238,123815,12381548,12381548105, 12381548105384,12381548105384945, 123815481053849453840,12381548105384945384010395, 1238154810538494538401039546080, 1238154810538494538401039546080135135] |