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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 6 |
| 3 | 77 |
| 4 | 1533 |
| 5 | 41547 |
| 6 | 1427789 |
| 7 | 59501185 |
| 8 | 2916185862 |
| 9 | 164377512831 |
| 10 | 10477134939301 |
| 11 | 745130845917317 |
| 12 | 58499605416732225 |
| 13 | 5025399546258317683 |
| 14 | 468897159717886522970 |
| 15 | 47222645752129576973609 |
| 16 | 5105611277081800029406545 |
| 17 | 589843003782904742592169479 |
[1,1,6,77,1533,41547,1427789,59501185,2916185862, 164377512831,10477134939301,745130845917317, 58499605416732225,5025399546258317683, 468897159717886522970,47222645752129576973609, 5105611277081800029406545, 589843003782904742592169479] |