n | a(n) |
---|---|
1 | 3 |
2 | 21 |
3 | 55 |
4 | 377 |
5 | 987 |
6 | 6765 |
7 | 17711 |
8 | 121393 |
9 | 317811 |
10 | 2178309 |
11 | 5702887 |
12 | 39088169 |
13 | 102334155 |
14 | 701408733 |
15 | 1836311903 |
16 | 12586269025 |
17 | 32951280099 |
18 | 225851433717 |
19 | 591286729879 |
20 | 4052739537881 |
21 | 10610209857723 |
22 | 72723460248141 |
23 | 190392490709135 |
24 | 1304969544928657 |
25 | 3416454622906707 |
[3,21,55,377,987,6765,17711,121393,317811,2178309, 5702887,39088169,102334155,701408733,1836311903, 12586269025,32951280099,225851433717,591286729879, 4052739537881,10610209857723,72723460248141, 190392490709135,1304969544928657,3416454622906707] |