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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 37 |
| 4 | 3593 |
| 5 | 2336376 |
| 6 | 12085125703 |
| 7 | 492300320300251 |
| 8 | 163856834420168837331 |
| 9 | 450436951076447377275760495 |
| 10 | 10360995769563446558192576106611177 |
| 11 | 2010994252878923176109086647579398800496256 |
| 12 | 3317129856969862808949985510559979253492213624483355 |
[1,1,3,37,3593,2336376,12085125703, 492300320300251,163856834420168837331, 450436951076447377275760495, 10360995769563446558192576106611177, 2010994252878923176109086647579398800496256, 33171298569698628089499855105599792534922136244833\ 55] |