n | a(n) |
---|---|
4 | 2 |
5 | 28 |
6 | 236 |
7 | 1852 |
8 | 14622 |
9 | 119964 |
10 | 1034992 |
11 | 9434444 |
12 | 90968602 |
13 | 927367340 |
14 | 9982234068 |
15 | 113261721276 |
16 | 1352111669942 |
17 | 16950982295356 |
18 | 222752212005464 |
19 | 3062768908594348 |
20 | 43987314357078642 |
21 | 658804420084315212 |
[2,28,236,1852,14622,119964,1034992,9434444, 90968602,927367340,9982234068,113261721276, 1352111669942,16950982295356,222752212005464, 3062768908594348,43987314357078642, 658804420084315212] |