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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1107 |
| 3 | 2186815 |
| 4 | 3017084995 |
| 5 | 5646492993891 |
| 6 | 12077564886803781 |
| 7 | 27807404215104008937 |
| 8 | 68307608848277646753795 |
| 9 | 176369571737525105395211155 |
| 10 | 473652951543995073451549187737 |
[1,1107,2186815,3017084995,5646492993891, 12077564886803781,27807404215104008937, 68307608848277646753795, 176369571737525105395211155, 473652951543995073451549187737] |