n | a(n) |
---|---|
1 | 1 |
2 | 8 |
3 | 58 |
4 | 444 |
5 | 3708 |
6 | 33984 |
7 | 341136 |
8 | 3733920 |
9 | 44339040 |
10 | 568356480 |
11 | 7827719040 |
12 | 115336085760 |
13 | 1810992556800 |
14 | 30196376985600 |
15 | 532953524275200 |
16 | 9927928075161600 |
17 | 194677319705702400 |
18 | 4008789120817152000 |
19 | 86495828444928000000 |
20 | 1951566265951948800000 |
21 | 45958933902500720640000 |
[1,8,58,444,3708,33984,341136,3733920,44339040, 568356480,7827719040,115336085760,1810992556800, 30196376985600,532953524275200,9927928075161600, 194677319705702400,4008789120817152000, 86495828444928000000,1951566265951948800000, 45958933902500720640000] |