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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 702 |
| 3 | 1722 |
| 4 | 60352 |
| 5 | 839935 |
| 6 | 12806826 |
| 7 | 217640633 |
| 8 | 3520683600 |
| 9 | 56360283031 |
| 10 | 925790421949 |
| 11 | 14995653106319 |
| 12 | 243449572143143 |
| 13 | 3961555586460616 |
| 14 | 64339957150977924 |
| 15 | 1045521379732970185 |
| 16 | 16993284073070123472 |
[0,702,1722,60352,839935,12806826,217640633, 3520683600,56360283031,925790421949, 14995653106319,243449572143143,3961555586460616, 64339957150977924,1045521379732970185, 16993284073070123472] |