n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 3 |
4 | 10 |
5 | 33 |
6 | 105 |
7 | 344 |
8 | 1105 |
9 | 3591 |
10 | 11594 |
11 | 37565 |
12 | 121485 |
13 | 393264 |
14 | 1272413 |
15 | 4117971 |
16 | 13325450 |
17 | 43123017 |
18 | 139547457 |
19 | 451587592 |
20 | 1461364025 |
21 | 4729080015 |
22 | 15303613546 |
23 | 49523551333 |
24 | 160261550085 |
25 | 518617316448 |
26 | 1678280815525 |
[0,0,1,3,10,33,105,344,1105,3591,11594,37565, 121485,393264,1272413,4117971,13325450,43123017, 139547457,451587592,1461364025,4729080015, 15303613546,49523551333,160261550085,518617316448, 1678280815525] |