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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 5 |
| 4 | 17 |
| 5 | 769 |
| 6 | 4609 |
| 7 | 1882805 |
| 8 | 15138593 |
| 9 | 66365067361 |
| 10 | 664157177281 |
| 11 | 35645315131333445 |
| 12 | 427773958289546417 |
| 13 | 301274983519644591252769 |
| 14 | 4217875813061550908307649 |
| 15 | 40527712572140444650575170520245 |
| 16 | 648443738687003872454538321727553 |
[1,1,1,5,17,769,4609,1882805,15138593,66365067361, 664157177281,35645315131333445,427773958289546417, 301274983519644591252769, 4217875813061550908307649, 40527712572140444650575170520245, 648443738687003872454538321727553] |