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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 5 |
| 3 | 0 |
| 4 | 21 |
| 5 | 0 |
| 6 | 85 |
| 7 | 16 |
| 8 | 261 |
| 9 | 224 |
| 10 | 1365 |
| 11 | 16 |
| 12 | 5381 |
| 13 | 224 |
| 14 | 21845 |
| 15 | 272 |
| 16 | 86021 |
| 17 | 4064 |
| 18 | 348245 |
| 19 | 3600 |
| 20 | 1398021 |
| 21 | 20704 |
| 22 | 5522773 |
| 23 | 139536 |
| 24 | 22089733 |
| 25 | 561120 |
| 26 | 88363093 |
| 27 | 2231824 |
| 28 | 353457413 |
| 29 | 8933600 |
| 30 | 1413760341 |
| 31 | 35791120 |
| 32 | 5655040005 |
| 33 | 143167456 |
| 34 | 22620164181 |
| 35 | 572657168 |
[1,0,5,0,21,0,85,16,261,224,1365,16,5381,224, 21845,272,86021,4064,348245,3600,1398021,20704, 5522773,139536,22089733,561120,88363093,2231824, 353457413,8933600,1413760341,35791120,5655040005, 143167456,22620164181,572657168] |