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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2704 |
| 3 | 494596 |
| 4 | 150610151 |
| 5 | 56182569218 |
| 6 | 22132498074021 |
| 7 | 8656506756327178 |
| 8 | 3389938886108156202 |
| 9 | 1331019952223152763862 |
| 10 | 523382675043001210360214 |
| 11 | 205904433904968682871489186 |
| 12 | 81019053039706376245418011749 |
| 13 | 31881826560222260172503676030065 |
[1,2704,494596,150610151,56182569218, 22132498074021,8656506756327178, 3389938886108156202,1331019952223152763862, 523382675043001210360214, 205904433904968682871489186, 81019053039706376245418011749, 31881826560222260172503676030065] |