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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 39 |
| 3 | 1873 |
| 4 | 237531 |
| 5 | 35640463 |
| 6 | 4584906969 |
| 7 | 507411694933 |
| 8 | 50579357233311 |
| 9 | 4705226804488123 |
| 10 | 418198020376490949 |
| 11 | 36058355701780773793 |
| 12 | 3046470997266047282091 |
| 13 | 253885499519508283406983 |
[1,3,39,1873,237531,35640463,4584906969, 507411694933,50579357233311,4705226804488123, 418198020376490949,36058355701780773793, 3046470997266047282091,253885499519508283406983] |