n | a(n) |
---|---|
0 | 1 |
1 | 21 |
2 | 377 |
3 | 6765 |
4 | 121393 |
5 | 2178309 |
6 | 39088169 |
7 | 701408733 |
8 | 12586269025 |
9 | 225851433717 |
10 | 4052739537881 |
11 | 72723460248141 |
12 | 1304969544928657 |
13 | 23416728348467685 |
14 | 420196140727489673 |
15 | 7540113804746346429 |
16 | 135301852344706746049 |
17 | 2427893228399975082453 |
[1,21,377,6765,121393,2178309,39088169,701408733, 12586269025,225851433717,4052739537881, 72723460248141,1304969544928657,23416728348467685, 420196140727489673,7540113804746346429, 135301852344706746049,2427893228399975082453] |