n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 34 |
4 | 460 |
5 | 8608 |
6 | 206152 |
7 | 6020992 |
8 | 207574240 |
9 | 8251015264 |
10 | 371527296256 |
11 | 18691127602816 |
12 | 1039066330203520 |
13 | 63253339835514112 |
14 | 4184830238170091008 |
15 | 298985971407749744128 |
16 | 22941517126450315985920 |
17 | 1881603821848104123344896 |
18 | 164271703613261014954276864 |
[1,1,4,34,460,8608,206152,6020992,207574240, 8251015264,371527296256,18691127602816, 1039066330203520,63253339835514112, 4184830238170091008,298985971407749744128, 22941517126450315985920,1881603821848104123344896, 164271703613261014954276864] |