The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 443 |
| 3 | 0 |
| 4 | 24893 |
| 5 | 0 |
| 6 | 360909 |
| 7 | 0 |
| 8 | 2676331 |
| 9 | 0 |
| 10 | 13280209 |
| 11 | 0 |
| 12 | 50435657 |
| 13 | 0 |
| 14 | 158259755 |
| 15 | 0 |
| 16 | 430394067 |
| 17 | 0 |
| 18 | 1047240813 |
| 19 | 0 |
| 20 | 2331232209 |
| 21 | 0 |
| 22 | 4825180007 |
| 23 | 0 |
| 24 | 9399464741 |
| 25 | 0 |
| 26 | 17394354077 |
| 27 | 0 |
| 28 | 30804515135 |
| 29 | 0 |
| 30 | 52513235123 |
| 31 | 0 |
| 32 | 86584738985 |
| 33 | 0 |
| 34 | 138623327831 |
| 35 | 0 |
[0,443,0,24893,0,360909,0,2676331,0,13280209,0, 50435657,0,158259755,0,430394067,0,1047240813,0, 2331232209,0,4825180007,0,9399464741,0, 17394354077,0,30804515135,0,52513235123,0, 86584738985,0,138623327831,0] |