n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 12 |
4 | 64 |
5 | 363 |
6 | 2214 |
7 | 14043 |
8 | 91857 |
9 | 614676 |
10 | 4189254 |
11 | 28974915 |
12 | 202870938 |
13 | 1435094800 |
14 | 10241197917 |
15 | 73639001172 |
16 | 533004547453 |
17 | 3880381334415 |
18 | 28395656513145 |
19 | 208748382089131 |
20 | 1540935621796941 |
21 | 11417266889312313 |
22 | 84880193073070819 |
23 | 632976019285857201 |
[0,1,3,12,64,363,2214,14043,91857,614676,4189254, 28974915,202870938,1435094800,10241197917, 73639001172,533004547453,3880381334415, 28395656513145,208748382089131,1540935621796941, 11417266889312313,84880193073070819, 632976019285857201] |