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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 20 |
| 3 | 662 |
| 4 | 1297759 |
| 5 | 1844432493162 |
| 6 | 5639188476912002976180302 |
| 7 | 82026153762914421289030509892448816950653744800250 |
| 8 | 41282640425840814517611601419413673319625465033274597914250689256152252919560334025322141823942800904 |
[4,20,662,1297759,1844432493162, 5639188476912002976180302, 82026153762914421289030509892448816950653744800250\ , 41282640425840814517611601419413673319625465033274\ 59791425068925615225291956033402532214182394280090\ 4] |