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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 13 |
| 4 | 4831 |
| 5 | 10867 |
| 6 | 380879 |
| 7 | 67872713 |
| 8 | 29248641596329 |
| 9 | 5375659901 |
| 10 | 2260742008115495258127626261 |
| 11 | 39302553278734052383226897 |
| 12 | 2202226772995090243 |
| 13 | 363934772650919 |
| 14 | 125129894757902719183 |
| 15 | 1330939456978870860802004244587 |
[1,1,13,4831,10867,380879,67872713,29248641596329, 5375659901,2260742008115495258127626261, 39302553278734052383226897,2202226772995090243, 363934772650919,125129894757902719183, 1330939456978870860802004244587] |