n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 16 |
6 | 35 |
7 | 63 |
8 | 129 |
9 | 234 |
10 | 445 |
11 | 798 |
12 | 1458 |
13 | 2568 |
14 | 4561 |
15 | 7924 |
16 | 13770 |
17 | 23584 |
18 | 40301 |
19 | 68097 |
20 | 114646 |
21 | 191336 |
22 | 317893 |
23 | 524396 |
24 | 861054 |
25 | 1405130 |
26 | 2282651 |
27 | 3688254 |
28 | 5933463 |
[1,0,2,4,9,16,35,63,129,234,445,798,1458,2568, 4561,7924,13770,23584,40301,68097,114646,191336, 317893,524396,861054,1405130,2282651,3688254, 5933463] |