n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 25 |
3 | 187 |
4 | 1552 |
5 | 13771 |
6 | 127927 |
7 | 1228576 |
8 | 12099751 |
9 | 121538581 |
10 | 1240336660 |
11 | 12824049277 |
12 | 134043231781 |
13 | 1414108869268 |
14 | 15037450664317 |
15 | 161014687970191 |
16 | 1734550886346592 |
17 | 18785969304551263 |
18 | 204432608804093155 |
[1,4,25,187,1552,13771,127927,1228576,12099751, 121538581,1240336660,12824049277,134043231781, 1414108869268,15037450664317,161014687970191, 1734550886346592,18785969304551263, 204432608804093155] |