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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 1 |
| 4 | 3 |
| 5 | 6 |
| 6 | 1 |
| 7 | 4 |
| 8 | 21 |
| 9 | 144 |
| 10 | 1 |
| 11 | 5 |
| 12 | 55 |
| 13 | 12111 |
| 14 | 11251322 |
| 15 | 1 |
| 16 | 6 |
| 17 | 120 |
| 18 | 358120 |
| 19 | 4825746875682 |
| 20 | 314824456456819827136 |
| 21 | 1 |
| 22 | 7 |
| 23 | 231 |
| 24 | 5131650 |
| 25 | 48038446526132256 |
| 26 | 38491882660019692002988737797054040 |
| 27 | 136221825854745676520058554256163406987047485113810944 |
| 28 | 1 |
[1,2,1,3,6,1,4,21,144,1,5,55,12111,11251322,1,6, 120,358120,4825746875682,314824456456819827136,1, 7,231,5131650,48038446526132256, 38491882660019692002988737797054040, 13622182585474567652005855425616340698704748511381\ 0944,1] |