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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 321 |
| 3 | 213445 |
| 4 | 278905249 |
| 5 | 610897146201 |
| 6 | 2023268287369681 |
| 7 | 9449986579423765453 |
| 8 | 59214605458489033180545 |
| 9 | 479530506556330198532943409 |
| 10 | 4875296429727384973283863144801 |
[1,321,213445,278905249,610897146201, 2023268287369681,9449986579423765453, 59214605458489033180545, 479530506556330198532943409, 4875296429727384973283863144801] |