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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 23 |
| 3 | 2637 |
| 4 | 705259 |
| 5 | 337390073 |
| 6 | 252186614847 |
| 7 | 271082082053317 |
| 8 | 396049017137512403 |
| 9 | 754792662169555947633 |
| 10 | 1818644980834260579498343 |
| 11 | 5405067064522549127719680701 |
| 12 | 19423396040054801221090342470843 |
| 13 | 83016890560608261435356904433668457 |
| 14 | 416213066932582983199004231480676255119 |
| 15 | 2419095491735191624607023665166934072373813 |
[1,23,2637,705259,337390073,252186614847, 271082082053317,396049017137512403, 754792662169555947633,1818644980834260579498343, 5405067064522549127719680701, 19423396040054801221090342470843, 83016890560608261435356904433668457, 416213066932582983199004231480676255119, 2419095491735191624607023665166934072373813] |