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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 46 |
| 4 | 2227 |
| 5 | 6684830083 |
| 6 | 12827743861 |
| 7 | 151652531182 |
| 8 | 155657642297 |
| 9 | 3102126273955 |
| 10 | 11006109076099 |
| 11 | 50473807426174 |
| 12 | 172794904196354 |
[1,2,46,2227,6684830083,12827743861,151652531182, 155657642297,3102126273955,11006109076099, 50473807426174,172794904196354] |