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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 129 |
| 5 | 297233651245505 |
| 6 | 1588898389043626055434220300433167237829218942966252641093888571632886068535351219199489258571766594 |
[1,1,2,129,297233651245505, 15888983890436260554342203004331672378292189429662\ 52641093888571632886068535351219199489258571766594\ ] |