n | a(n) |
---|---|
4 | 1 |
5 | 30 |
6 | 745 |
7 | 18515 |
8 | 484729 |
9 | 13591116 |
10 | 409987640 |
11 | 13303809750 |
12 | 463397746636 |
13 | 17276343754098 |
14 | 687247936771032 |
15 | 29079485483123985 |
16 | 1304889365985201424 |
17 | 61922948839969015928 |
18 | 3099416199490785094272 |
19 | 163229892984351540698188 |
20 | 9024648860521246301700096 |
[1,30,745,18515,484729,13591116,409987640, 13303809750,463397746636,17276343754098, 687247936771032,29079485483123985, 1304889365985201424,61922948839969015928, 3099416199490785094272,163229892984351540698188, 9024648860521246301700096] |