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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 47 |
| 2 | 11396 |
| 3 | 2217871 |
| 4 | 447264801 |
| 5 | 89761235312 |
| 6 | 18027314711921 |
| 7 | 3620162014192047 |
| 8 | 726995373373259268 |
| 9 | 145993770068726584623 |
| 10 | 29318189070923580394385 |
| 11 | 5887622256467996898381824 |
| 12 | 1182340968901089528485742513 |
| 13 | 237435437338572028041097654463 |
[1,47,11396,2217871,447264801,89761235312, 18027314711921,3620162014192047, 726995373373259268,145993770068726584623, 29318189070923580394385,5887622256467996898381824, 1182340968901089528485742513, 237435437338572028041097654463] |