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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 1 |
| 3 | 1 |
| 4 | 5 |
| 5 | 49 |
| 6 | 3823 |
| 7 | 10436791 |
| 8 | 91498340590348 |
| 9 | 16878924054006628616561542268 |
| 10 | 1037072167459498271969377959736955928500322755810409274896 |
| 11 | 1758618383011028875762229897498966705737981284604676043205492817705756616240608451710873787593445097075800445688725 |
[2,1,1,5,49,3823,10436791,91498340590348, 16878924054006628616561542268, 10370721674594982719693779597369559285003227558104\ 09274896, 17586183830110288757622298974989667057379812846046\ 76043205492817705756616240608451710873787593445097\ 075800445688725] |