n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 10 |
4 | 32 |
5 | 122 |
6 | 516 |
7 | 2322 |
8 | 10880 |
9 | 52466 |
10 | 258564 |
11 | 1296282 |
12 | 6589728 |
13 | 33887466 |
14 | 175966212 |
15 | 921353250 |
16 | 4858956288 |
17 | 25786112994 |
18 | 137604139012 |
19 | 737922992938 |
20 | 3974647310112 |
21 | 21493266631002 |
22 | 116642921832964 |
23 | 635074797251890 |
[1,2,4,10,32,122,516,2322,10880,52466,258564, 1296282,6589728,33887466,175966212,921353250, 4858956288,25786112994,137604139012,737922992938, 3974647310112,21493266631002,116642921832964, 635074797251890] |