n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 66 |
4 | 1056 |
5 | 22176 |
6 | 576576 |
7 | 17873856 |
8 | 643458816 |
9 | 26381811456 |
10 | 1213563326976 |
11 | 61891729675776 |
12 | 3465936861843456 |
13 | 211422148572450816 |
14 | 13953861805781753856 |
15 | 990724188210504523776 |
16 | 75295038303998343806976 |
17 | 6098898102623865848365056 |
18 | 524505236825652462959394816 |
[1,1,6,66,1056,22176,576576,17873856,643458816, 26381811456,1213563326976,61891729675776, 3465936861843456,211422148572450816, 13953861805781753856,990724188210504523776, 75295038303998343806976,6098898102623865848365056, 524505236825652462959394816] |