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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 17 |
| 4 | 929569 |
| 5 | 129848163681107301953 |
| 6 | 7724760729208487305545342963324697288405380586579904269441 |
| 7 | 357302767470032900576643605538835088084055212588960920085261795996340330997333306469144562500392344758421560010463942134842407723273904635849262137252097 |
[1,1,17,929569,129848163681107301953, 77247607292084873055453429633246972884053805865799\ 04269441, 35730276747003290057664360553883508808405521258896\ 09200852617959963403309973333064691445625003923447\ 58421560010463942134842407723273904635849262137252\ 097] |