n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 30 |
4 | 332 |
5 | 4880 |
6 | 89742 |
7 | 1986124 |
8 | 51471800 |
9 | 1530489744 |
10 | 51395228090 |
11 | 1924687118684 |
12 | 79553145323940 |
13 | 3598161485778808 |
14 | 176797212122233094 |
15 | 9378715234039802340 |
16 | 534259395682874552048 |
17 | 32528761111972930621472 |
18 | 2108146039402630977388530 |
19 | 144899759883703796130871468 |
20 | 10528261771566724089621962780 |
[1,4,30,332,4880,89742,1986124,51471800, 1530489744,51395228090,1924687118684, 79553145323940,3598161485778808, 176797212122233094,9378715234039802340, 534259395682874552048,32528761111972930621472, 2108146039402630977388530, 144899759883703796130871468, 10528261771566724089621962780] |