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| n | a(n) |
|---|---|
| 5 | 1 |
| 6 | 127 |
| 7 | 8085 |
| 8 | 382358 |
| 9 | 15653598 |
| 10 | 598415692 |
| 11 | 22280470762 |
| 12 | 828351390146 |
| 13 | 31225895068199 |
| 14 | 1204894853397543 |
| 15 | 47870402081423775 |
| 16 | 1965205314867907972 |
| 17 | 83531844407610101388 |
| 18 | 3679988322044604002256 |
| 19 | 168093873703636990132596 |
| 20 | 7960504783782783371445468 |
[1,127,8085,382358,15653598,598415692,22280470762, 828351390146,31225895068199,1204894853397543, 47870402081423775,1965205314867907972, 83531844407610101388,3679988322044604002256, 168093873703636990132596, 7960504783782783371445468] |