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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
| 8 | 7 |
| 9 | 43 |
| 10 | 1807 |
| 11 | 815861 |
| 12 | 147917502976 |
| 13 | 1339566593057489572791 |
| 14 | 6793440021984612817314824762112917427331 |
| 15 | 607759339422199886496126580428414916308278553796099069562650354036190535151 |
[1,1,1,1,1,2,3,7,43,1807,815861,147917502976, 1339566593057489572791, 6793440021984612817314824762112917427331, 60775933942219988649612658042841491630827855379609\ 9069562650354036190535151] |