n | a(n) |
---|---|
6 | 1 |
7 | 6 |
8 | 42 |
9 | 280 |
10 | 2016 |
11 | 15372 |
12 | 125202 |
13 | 1086624 |
14 | 10032165 |
15 | 98284186 |
16 | 1019176158 |
17 | 11158475328 |
18 | 128679348616 |
19 | 1559469776760 |
20 | 19819217040840 |
21 | 263618581334880 |
22 | 3663049523187915 |
23 | 53081003095769880 |
24 | 800881711486787315 |
25 | 12562640594116484256 |
26 | 204583362011569856700 |
[1,6,42,280,2016,15372,125202,1086624,10032165, 98284186,1019176158,11158475328,128679348616, 1559469776760,19819217040840,263618581334880, 3663049523187915,53081003095769880, 800881711486787315,12562640594116484256, 204583362011569856700] |