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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 145 |
| 3 | 2411 |
| 4 | 39321 |
| 5 | 647287 |
| 6 | 10652849 |
| 7 | 175284259 |
| 8 | 2884208601 |
| 9 | 47458332799 |
| 10 | 780904692697 |
| 11 | 12849420860335 |
| 12 | 211431203704621 |
| 13 | 3479001459520535 |
| 14 | 57245340037605157 |
| 15 | 941945266264605543 |
| 16 | 15499268308326369925 |
[7,145,2411,39321,647287,10652849,175284259, 2884208601,47458332799,780904692697, 12849420860335,211431203704621,3479001459520535, 57245340037605157,941945266264605543, 15499268308326369925] |