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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 32 |
| 4 | 283 |
| 5 | 2643 |
| 6 | 32317 |
| 7 | 443824 |
| 8 | 7115461 |
| 9 | 127222805 |
| 10 | 2541399091 |
| 11 | 55739417376 |
| 12 | 1335729425647 |
| 13 | 34666455314407 |
| 14 | 969419191792633 |
| 15 | 29046504524166368 |
| 16 | 928541094344685577 |
| 17 | 31540972026299055849 |
[1,1,7,32,283,2643,32317,443824,7115461,127222805, 2541399091,55739417376,1335729425647, 34666455314407,969419191792633,29046504524166368, 928541094344685577,31540972026299055849] |