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| n | a(n) |
|---|---|
| 0 | 4 |
| 1 | 54 |
| 2 | 604 |
| 3 | 6654 |
| 4 | 73204 |
| 5 | 805254 |
| 6 | 8857804 |
| 7 | 97435854 |
| 8 | 1071794404 |
| 9 | 11789738454 |
| 10 | 129687123004 |
| 11 | 1426558353054 |
| 12 | 15692141883604 |
| 13 | 172613560719654 |
| 14 | 1898749167916204 |
| 15 | 20886240847078254 |
| 16 | 229748649317860804 |
| 17 | 2527235142496468854 |
[4,54,604,6654,73204,805254,8857804,97435854, 1071794404,11789738454,129687123004,1426558353054, 15692141883604,172613560719654,1898749167916204, 20886240847078254,229748649317860804, 2527235142496468854] |