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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 6 |
| 2 | 30 |
| 3 | 2002 |
| 4 | 92378 |
| 5 | 13357342 |
| 6 | 2697562774 |
| 7 | 292157776958 |
| 8 | 36257787561098 |
| 9 | 5563815981553006 |
| 10 | 406158566653369438 |
| 11 | 757411721425002359054 |
| 12 | 78013407306775242982562 |
| 13 | 17167365460734333186898502 |
| 14 | 1939912297062979650119530726 |
| 15 | 2548800423984304257055702381202 |
[2,6,30,2002,92378,13357342,2697562774, 292157776958,36257787561098,5563815981553006, 406158566653369438,757411721425002359054, 78013407306775242982562, 17167365460734333186898502, 1939912297062979650119530726, 2548800423984304257055702381202] |