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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 0 |
| 3 | 104 |
| 4 | 0 |
| 5 | 9346 |
| 6 | 0 |
| 7 | 4278774 |
| 8 | 0 |
| 9 | 9966039904 |
| 10 | 0 |
| 11 | 118222727145122 |
| 12 | 0 |
| 13 | 7149579817467705382 |
| 14 | 0 |
| 15 | 2205539783282634028931328 |
[6,0,104,0,9346,0,4278774,0,9966039904,0, 118222727145122,0,7149579817467705382,0, 2205539783282634028931328] |