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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2016 |
| 2 | 635376 |
| 3 | 74974368 |
| 4 | 4426165368 |
| 5 | 151473214816 |
| 6 | 3284214703056 |
| 7 | 47855699958816 |
| 8 | 488526937079580 |
| 9 | 3601688791018080 |
| 10 | 19619725782651120 |
| 11 | 80347448443237920 |
| 12 | 250649105469666120 |
| 13 | 601557853127198688 |
| 14 | 1118770292985239888 |
| 15 | 1620288010530347424 |
| 16 | 1832624140942590534 |
[1,2016,635376,74974368,4426165368,151473214816, 3284214703056,47855699958816,488526937079580, 3601688791018080,19619725782651120, 80347448443237920,250649105469666120, 601557853127198688,1118770292985239888, 1620288010530347424,1832624140942590534] |