n | a(n) |
---|---|
0 | 2 |
1 | 3 |
2 | 17 |
3 | 71 |
4 | 251 |
5 | 857 |
6 | 2767 |
7 | 8803 |
8 | 27211 |
9 | 82939 |
10 | 249779 |
11 | 744949 |
12 | 2201273 |
13 | 6463081 |
14 | 18858529 |
15 | 54764947 |
16 | 158330573 |
17 | 456016933 |
18 | 1309050653 |
19 | 3746543923 |
20 | 10694444393 |
21 | 30453898201 |
22 | 86534078387 |
23 | 245401348403 |
24 | 694683409429 |
[2,3,17,71,251,857,2767,8803,27211,82939,249779, 744949,2201273,6463081,18858529,54764947, 158330573,456016933,1309050653,3746543923, 10694444393,30453898201,86534078387,245401348403, 694683409429] |