n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 8 |
5 | 24 |
6 | 56 |
7 | 248 |
8 | 1016 |
9 | 5624 |
10 | 24056 |
11 | 208376 |
12 | 945656 |
13 | 9793016 |
14 | 62877176 |
15 | 487550456 |
16 | 3884936696 |
17 | 58243116536 |
18 | 384392195576 |
19 | 6255075618296 |
20 | 53220543000056 |
21 | 616806151581176 |
22 | 6252662237392376 |
23 | 130241496125238776 |
24 | 1122152167228009976 |
25 | 20960365589283433976 |
[1,2,4,8,24,56,248,1016,5624,24056,208376,945656, 9793016,62877176,487550456,3884936696,58243116536, 384392195576,6255075618296,53220543000056, 616806151581176,6252662237392376, 130241496125238776,1122152167228009976, 20960365589283433976] |