n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 2 |
3 | 8 |
4 | 8 |
5 | 32 |
6 | 144 |
7 | 432 |
8 | 2160 |
9 | 27000 |
10 | 582120 |
11 | 7623000 |
12 | 336936600 |
13 | 6740402760 |
14 | 543454231320 |
15 | 57619849046760 |
16 | 4683793138766280 |
17 | 412882704970215480 |
18 | 88171665744392750520 |
19 | 12780536107937124847320 |
20 | 2685589660883755945879560 |
21 | 942036670625665177379096280 |
[1,2,2,8,8,32,144,432,2160,27000,582120,7623000, 336936600,6740402760,543454231320,57619849046760, 4683793138766280,412882704970215480, 88171665744392750520,12780536107937124847320, 2685589660883755945879560, 942036670625665177379096280] |