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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3139 |
| 3 | 19546975 |
| 4 | 171475190227 |
| 5 | 1846780916614531 |
| 6 | 21822522304624196821 |
| 7 | 281689709632342945209529 |
| 8 | 3899377047452140922854977715 |
| 9 | 57040154877904164444585301792867 |
| 10 | 872202510697313574048780502647781609 |
[1,3139,19546975,171475190227,1846780916614531, 21822522304624196821,281689709632342945209529, 3899377047452140922854977715, 57040154877904164444585301792867, 872202510697313574048780502647781609] |