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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 9 |
| 4 | 109 |
| 5 | 141 |
| 6 | 10583 |
| 7 | 34641 |
| 8 | 44510583 |
| 9 | 105741141 |
| 10 | 942926927083 |
| 11 | 4346471925583 |
| 12 | 2969848344609859 |
[1,3,9,109,141,10583,34641,44510583,105741141, 942926927083,4346471925583,2969848344609859] |