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| n | a(n) |
|---|---|
| 1 | 63 |
| 2 | 63291 |
| 3 | 31783299 |
| 4 | 17324310663 |
| 5 | 9366963651897 |
| 6 | 5071373978989773 |
| 7 | 2745117942652795617 |
| 8 | 1485981308554100717397 |
| 9 | 804382842721296064467525 |
| 10 | 435424391066549741979527775 |
| 11 | 235701650566916249474911785897 |
[63,63291,31783299,17324310663,9366963651897, 5071373978989773,2745117942652795617, 1485981308554100717397,804382842721296064467525, 435424391066549741979527775, 235701650566916249474911785897] |