n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 30 |
4 | 113 |
5 | 428 |
6 | 1629 |
7 | 6226 |
8 | 23881 |
9 | 91884 |
10 | 354484 |
11 | 1370812 |
12 | 5312058 |
13 | 20622904 |
14 | 80196055 |
15 | 312319530 |
16 | 1217938665 |
17 | 4755296460 |
18 | 18586968840 |
19 | 72723903780 |
20 | 284804791230 |
21 | 1116315593640 |
22 | 4378929921210 |
23 | 17189573707956 |
[1,2,8,30,113,428,1629,6226,23881,91884,354484, 1370812,5312058,20622904,80196055,312319530, 1217938665,4755296460,18586968840,72723903780, 284804791230,1116315593640,4378929921210, 17189573707956] |