n | a(n) |
---|---|
0 | 3 |
1 | 3 |
2 | 12 |
3 | 41 |
4 | 148 |
5 | 517 |
6 | 1809 |
7 | 6316 |
8 | 22052 |
9 | 76982 |
10 | 268737 |
11 | 938126 |
12 | 3274873 |
13 | 11432137 |
14 | 39908034 |
15 | 139313506 |
16 | 486324452 |
17 | 1697692337 |
18 | 5926412412 |
19 | 20688297461 |
20 | 72220024873 |
21 | 252110257132 |
22 | 880082523684 |
23 | 3072248060446 |
24 | 10724798971577 |
[3,3,12,41,148,517,1809,6316,22052,76982,268737, 938126,3274873,11432137,39908034,139313506, 486324452,1697692337,5926412412,20688297461, 72220024873,252110257132,880082523684, 3072248060446,10724798971577] |