n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 25 |
5 | 241 |
6 | 1441 |
7 | 6721 |
8 | 87361 |
9 | 1729729 |
10 | 24816961 |
11 | 270452161 |
12 | 3705324481 |
13 | 85344916801 |
14 | 1992230175937 |
15 | 38047293910081 |
16 | 709217112938881 |
17 | 17385498239168641 |
18 | 514103858592923521 |
19 | 14254662916125735553 |
20 | 366807994235438359681 |
21 | 10338786602768939575681 |
[1,1,1,1,25,241,1441,6721,87361,1729729,24816961, 270452161,3705324481,85344916801,1992230175937, 38047293910081,709217112938881,17385498239168641, 514103858592923521,14254662916125735553, 366807994235438359681,10338786602768939575681] |