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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 10 |
| 4 | 35 |
| 5 | 1126 |
| 6 | 7592 |
| 7 | 1697508 |
| 8 | 22458249 |
| 9 | 36000614026 |
| 10 | 941605438142 |
| 11 | 11035829403860196 |
| 12 | 572800408273738658 |
| 13 | 49759074151291691916640 |
| 14 | 5136409738603278958315040 |
| 15 | 3340664790391139471267200338312 |
[1,2,10,35,1126,7592,1697508,22458249,36000614026, 941605438142,11035829403860196,572800408273738658, 49759074151291691916640,5136409738603278958315040, 3340664790391139471267200338312] |