n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 26 |
6 | 76 |
7 | 232 |
8 | 750 |
9 | 2493 |
10 | 8514 |
11 | 29524 |
12 | 103708 |
13 | 367225 |
14 | 1308542 |
15 | 4682276 |
16 | 16807286 |
17 | 60462082 |
18 | 217855460 |
19 | 785863048 |
20 | 2837177434 |
21 | 10249053629 |
22 | 37039804078 |
23 | 133902392980 |
24 | 484178868612 |
25 | 1751030978481 |
26 | 6333341963706 |
27 | 22909148647012 |
28 | 82872738727330 |
[1,2,4,10,26,76,232,750,2493,8514,29524,103708, 367225,1308542,4682276,16807286,60462082, 217855460,785863048,2837177434,10249053629, 37039804078,133902392980,484178868612, 1751030978481,6333341963706,22909148647012, 82872738727330] |