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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 2 |
| 3 | 6 |
| 4 | 8 |
| 5 | 30 |
| 6 | 18 |
| 7 | 126 |
| 8 | 40 |
| 9 | 504 |
| 10 | 430 |
| 11 | 979 |
| 12 | 240 |
| 13 | 1105 |
| 14 | 2198 |
| 15 | 6820 |
| 16 | 6016 |
| 17 | 78812 |
| 18 | 7812 |
| 19 | 183920 |
| 20 | 142580 |
| 21 | 352884 |
| 22 | 122870 |
| 23 | 3459591 |
| 24 | 421188 |
| 25 | 10828525 |
| 26 | 334308 |
| 27 | 81688176 |
| 28 | 989212 |
| 29 | 463347935 |
| 30 | 5921860 |
| 31 | 1211061438 |
| 32 | 26636800 |
| 33 | 3315517623 |
| 34 | 187950912 |
| 35 | 24752893585 |
[2,2,6,8,30,18,126,40,504,430,979,240,1105,2198, 6820,6016,78812,7812,183920,142580,352884,122870, 3459591,421188,10828525,334308,81688176,989212, 463347935,5921860,1211061438,26636800,3315517623, 187950912,24752893585] |