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| n | a(n) |
|---|---|
| 2 | 5 |
| 3 | 29 |
| 4 | 116 |
| 5 | 2309 |
| 6 | 30029 |
| 7 | 272264 |
| 8 | 6715161 |
| 9 | 154448901 |
| 10 | 3696967556 |
| 11 | 126321788241 |
| 12 | 5984466237725 |
| 13 | 304250263527209 |
| 14 | 7475863618097156 |
| 15 | 495878856926202725 |
| 16 | 17521052944725830450 |
| 17 | 1749278213298193453469 |
| 18 | 65483587607609351045025 |
[5,29,116,2309,30029,272264,6715161,154448901, 3696967556,126321788241,5984466237725, 304250263527209,7475863618097156, 495878856926202725,17521052944725830450, 1749278213298193453469,65483587607609351045025] |