n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 4 |
3 | 11 |
4 | 25 |
5 | 62 |
6 | 162 |
7 | 433 |
8 | 1175 |
9 | 3229 |
10 | 9042 |
11 | 25549 |
12 | 73050 |
13 | 210356 |
14 | 610041 |
15 | 1779830 |
16 | 5218745 |
17 | 15372304 |
18 | 45455747 |
19 | 134882577 |
20 | 401480918 |
21 | 1198344171 |
22 | 3585783711 |
23 | 10754085805 |
24 | 32319203663 |
25 | 97312548674 |
26 | 293515297707 |
27 | 886720888966 |
28 | 2682778745396 |
29 | 8127887397064 |
[0,2,4,11,25,62,162,433,1175,3229,9042,25549, 73050,210356,610041,1779830,5218745,15372304, 45455747,134882577,401480918,1198344171, 3585783711,10754085805,32319203663,97312548674, 293515297707,886720888966,2682778745396, 8127887397064] |