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| n | a(n) |
|---|---|
| 8 | 1 |
| 9 | 73 |
| 10 | 2026 |
| 11 | 51866 |
| 12 | 1205832 |
| 13 | 26820444 |
| 14 | 590148378 |
| 15 | 13100356128 |
| 16 | 295439599773 |
| 17 | 6807481609901 |
| 18 | 160887057723746 |
| 19 | 3910224803769926 |
| 20 | 97864814302511668 |
| 21 | 2524228366327596948 |
| 22 | 67113790045849483056 |
| 23 | 1839604074821982820944 |
| 24 | 51976021537896649002555 |
[1,73,2026,51866,1205832,26820444,590148378, 13100356128,295439599773,6807481609901, 160887057723746,3910224803769926, 97864814302511668,2524228366327596948, 67113790045849483056,1839604074821982820944, 51976021537896649002555] |