n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 12 |
5 | 64 |
6 | 424 |
7 | 3358 |
8 | 30952 |
9 | 325488 |
10 | 3845724 |
11 | 50437624 |
12 | 727094704 |
13 | 11427436072 |
14 | 194468970904 |
15 | 3562501626672 |
16 | 69898886742000 |
17 | 1462459974022576 |
18 | 32502337621339552 |
19 | 764665424888545504 |
20 | 18985593544003151296 |
21 | 496110180329803750944 |
22 | 13609892277526894358016 |
[1,1,3,12,64,424,3358,30952,325488,3845724, 50437624,727094704,11427436072,194468970904, 3562501626672,69898886742000,1462459974022576, 32502337621339552,764665424888545504, 18985593544003151296,496110180329803750944, 13609892277526894358016] |