n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 25 |
5 | 216 |
6 | 1561 |
7 | 19328 |
8 | 225681 |
9 | 3790720 |
10 | 54595921 |
11 | 1141489152 |
12 | 20620975849 |
13 | 519551642624 |
14 | 11074307974185 |
15 | 325796967940096 |
16 | 8068953248603809 |
17 | 271784019897188352 |
18 | 7647972455738262817 |
19 | 290140183695205990400 |
20 | 9154902981606486123321 |
[1,1,1,4,25,216,1561,19328,225681,3790720, 54595921,1141489152,20620975849,519551642624, 11074307974185,325796967940096,8068953248603809, 271784019897188352,7647972455738262817, 290140183695205990400,9154902981606486123321] |