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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 54 |
| 3 | 723 |
| 4 | 9773 |
| 5 | 132369 |
| 6 | 1792237 |
| 7 | 24269723 |
| 8 | 328645291 |
| 9 | 4450319537 |
| 10 | 60263615333 |
| 11 | 816054461063 |
| 12 | 11050530322615 |
| 13 | 149639792084929 |
| 14 | 2026334190350265 |
| 15 | 27439427668181531 |
| 16 | 371568616043522567 |
| 17 | 5031563999805819365 |
[4,54,723,9773,132369,1792237,24269723,328645291, 4450319537,60263615333,816054461063, 11050530322615,149639792084929,2026334190350265, 27439427668181531,371568616043522567, 5031563999805819365] |