n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 33 |
4 | 451 |
5 | 9110 |
6 | 253401 |
7 | 9246881 |
8 | 427272364 |
9 | 24332740569 |
10 | 1671761966755 |
11 | 136185663849422 |
12 | 12966840876896193 |
13 | 1425738305622057713 |
14 | 179172604156015950676 |
15 | 25507107918052543195905 |
16 | 4081610970381242583997171 |
17 | 729135575105289450378655526 |
[1,1,4,33,451,9110,253401,9246881,427272364, 24332740569,1671761966755,136185663849422, 12966840876896193,1425738305622057713, 179172604156015950676,25507107918052543195905, 4081610970381242583997171, 729135575105289450378655526] |