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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 25 |
| 6 | 841 |
| 7 | 187489 |
| 8 | 1418727556 |
| 9 | 2393959458891025 |
| 10 | 30567386265691995561839449 |
| 11 | 658593751358960570203157512237008273218521 |
| 12 | 181183406309644143341701434158730639946454023369335051404405528107396 |
[1,1,1,4,25,841,187489,1418727556, 2393959458891025,30567386265691995561839449, 658593751358960570203157512237008273218521, 18118340630964414334170143415873063994645402336933\ 5051404405528107396] |