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| n | a(n) |
|---|---|
| 1 | 704 |
| 2 | 13440 |
| 3 | 260544 |
| 4 | 5177344 |
| 5 | 104024384 |
| 6 | 2091689856 |
| 7 | 42093682560 |
| 8 | 847003638592 |
| 9 | 17044363936064 |
| 10 | 342984883288320 |
| 11 | 6901954012961472 |
| 12 | 138889149973883968 |
| 13 | 2794890082844179712 |
| 14 | 56242044597486800064 |
| 15 | 1131768255782132928320 |
[704,13440,260544,5177344,104024384,2091689856, 42093682560,847003638592,17044363936064, 342984883288320,6901954012961472, 138889149973883968,2794890082844179712, 56242044597486800064,1131768255782132928320] |