n | a(n) |
---|---|
1 | 2 |
2 | 7 |
3 | 37 |
4 | 241 |
5 | 1801 |
6 | 15121 |
7 | 141121 |
8 | 1451521 |
9 | 16329601 |
10 | 199584001 |
11 | 37362124801 |
12 | 566658892801 |
13 | 9153720576001 |
14 | 23112569077678080001 |
15 | 186134520519971831808000001 |
[2,7,37,241,1801,15121,141121,1451521,16329601, 199584001,37362124801,566658892801,9153720576001, 23112569077678080001,186134520519971831808000001] |