n | a(n) |
---|---|
1 | 3 |
2 | 7 |
3 | 15 |
4 | 101 |
5 | 297 |
6 | 1255 |
7 | 4565 |
8 | 21637 |
9 | 44583 |
10 | 63261 |
11 | 329931 |
12 | 1121505 |
13 | 2679689 |
14 | 4697205 |
15 | 6185689 |
16 | 23338469 |
17 | 49995925 |
18 | 431149389 |
19 | 3913864295 |
20 | 13610949895 |
21 | 80630964769 |
22 | 362326859895 |
23 | 749474411781 |
24 | 2168627105469 |
25 | 3646072432125 |
26 | 10085065885767 |
27 | 27152408925615 |
[3,7,15,101,297,1255,4565,21637,44583,63261, 329931,1121505,2679689,4697205,6185689,23338469, 49995925,431149389,3913864295,13610949895, 80630964769,362326859895,749474411781, 2168627105469,3646072432125,10085065885767, 27152408925615] |