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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 31 |
| 3 | 3991 |
| 4 | 1340251 |
| 5 | 929043391 |
| 6 | 1153715889691 |
| 7 | 2333670966674671 |
| 8 | 7180487882511523051 |
| 9 | 31919495229412870788031 |
| 10 | 196909477461357591810377851 |
| 11 | 1632140626754602443266222263951 |
| 12 | 17701927686793740884448652685728651 |
| 13 | 245721757633690118910277310669218472671 |
[1,1,31,3991,1340251,929043391,1153715889691, 2333670966674671,7180487882511523051, 31919495229412870788031, 196909477461357591810377851, 1632140626754602443266222263951, 17701927686793740884448652685728651, 245721757633690118910277310669218472671] |