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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 3 |
| 6 | 10 |
| 7 | 1 |
| 8 | 4 |
| 9 | 56 |
| 10 | 49127 |
| 11 | 1 |
| 12 | 5 |
| 13 | 220 |
| 14 | 740360358 |
| 15 | 314824532572147370464 |
| 16 | 1 |
| 17 | 6 |
| 18 | 680 |
| 19 | 733776248840 |
| 20 | 38491882660671134164965704408524083 |
| 21 | 38343035259947576596859948806931124970404417593861154473053467181056 |
| 22 | 1 |
[1,2,1,3,10,1,4,56,49127,1,5,220,740360358, 314824532572147370464,1,6,680,733776248840, 38491882660671134164965704408524083, 38343035259947576596859948806931124970404417593861\ 154473053467181056,1] |