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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 1716 |
| 3 | 1331453 |
| 4 | 2151119533 |
| 5 | 5938064541933 |
| 6 | 25001581180419574 |
| 7 | 149146087541448025113 |
| 8 | 1197001151269888963598710 |
| 9 | 12438152383638540661198890270 |
| 10 | 162463054412281434919873901126151 |
| 11 | 2605489905334911696096494773053052893 |
| 12 | 50333834408520079001698097784322059257809 |
[1,7,1716,1331453,2151119533,5938064541933, 25001581180419574,149146087541448025113, 1197001151269888963598710, 12438152383638540661198890270, 162463054412281434919873901126151, 2605489905334911696096494773053052893, 50333834408520079001698097784322059257809] |