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| n | a(n) |
|---|---|
| 1 | 24 |
| 2 | 648 |
| 3 | 19584 |
| 4 | 643680 |
| 5 | 22374144 |
| 6 | 807480576 |
| 7 | 29933494272 |
| 8 | 1132434556416 |
| 9 | 43535117537280 |
| 10 | 1695501057650688 |
| 11 | 66738461036838912 |
| 12 | 2650278622026645504 |
| 13 | 106030560469874245632 |
| 14 | 4268836144498501877760 |
| 15 | 172798003474832717512704 |
[24,648,19584,643680,22374144,807480576, 29933494272,1132434556416,43535117537280, 1695501057650688,66738461036838912, 2650278622026645504,106030560469874245632, 4268836144498501877760,172798003474832717512704] |