n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 44 |
3 | 580 |
4 | 8092 |
5 | 116304 |
6 | 1703636 |
7 | 25288120 |
8 | 379061020 |
9 | 5724954544 |
10 | 86981744944 |
11 | 1327977811076 |
12 | 20356299454276 |
13 | 313095240079600 |
14 | 4829571309488760 |
15 | 74683398325804080 |
16 | 1157402982351003420 |
17 | 17971185794898859248 |
[1,4,44,580,8092,116304,1703636,25288120, 379061020,5724954544,86981744944,1327977811076, 20356299454276,313095240079600,4829571309488760, 74683398325804080,1157402982351003420, 17971185794898859248] |