n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 4 |
4 | 25 |
5 | 366 |
6 | 5491 |
7 | 176569 |
8 | 5332097 |
9 | 276268942 |
10 | 13470365431 |
11 | 1135683784753 |
12 | 75066413338423 |
13 | 9256260956838520 |
14 | 918768523598548169 |
15 | 140268128758724744770 |
16 | 18398287904991375995745 |
17 | 3879391299475140314514162 |
18 | 594721341754741064012714341 |
[1,1,4,25,366,5491,176569,5332097,276268942, 13470365431,1135683784753,75066413338423, 9256260956838520,918768523598548169, 140268128758724744770,18398287904991375995745, 3879391299475140314514162, 594721341754741064012714341] |