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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 6 |
| 3 | 12 |
| 4 | 5040 |
| 5 | 30 |
| 6 | 77598259200 |
| 7 | 56 |
| 8 | 1307674368000 |
| 9 | 168480 |
| 10 | 12703122432000 |
| 11 | 132 |
| 12 | 52875224823823084892891318660312910903645116196873830400000000000000 |
| 13 | 182 |
| 14 | 440505199411200 |
| 15 | 493242753024000 |
| 16 | 8222838654177922817725562880000000 |
| 17 | 306 |
[1,6,12,5040,30,77598259200,56,1307674368000, 168480,12703122432000,132, 52875224823823084892891318660312910903645116196873\ 830400000000000000,182,440505199411200, 493242753024000, 8222838654177922817725562880000000,306] |