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| n | a(n) |
|---|---|
| 1 | 1344 |
| 2 | 10080 |
| 3 | 67072 |
| 4 | 463632 |
| 5 | 3166800 |
| 6 | 21708320 |
| 7 | 148654000 |
| 8 | 1018262528 |
| 9 | 6974320896 |
| 10 | 47770334768 |
| 11 | 327196846288 |
| 12 | 2241105186080 |
| 13 | 15350212751664 |
| 14 | 105139754969120 |
| 15 | 720144021240448 |
| 16 | 4932553704580224 |
| 17 | 33785026239436560 |
[1344,10080,67072,463632,3166800,21708320, 148654000,1018262528,6974320896,47770334768, 327196846288,2241105186080,15350212751664, 105139754969120,720144021240448,4932553704580224, 33785026239436560] |