n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 36 |
3 | 424 |
4 | 5716 |
5 | 83544 |
6 | 1288296 |
7 | 20637264 |
8 | 340116276 |
9 | 5730014584 |
10 | 98241641656 |
11 | 1708602483504 |
12 | 30070563388936 |
13 | 534554579527024 |
14 | 9584333758817616 |
15 | 173120386421418144 |
16 | 3147337611202622196 |
17 | 57545643875054919864 |
18 | 1057492201661230657176 |
[1,4,36,424,5716,83544,1288296,20637264,340116276, 5730014584,98241641656,1708602483504, 30070563388936,534554579527024,9584333758817616, 173120386421418144,3147337611202622196, 57545643875054919864,1057492201661230657176] |