n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 17 |
5 | 46 |
6 | 153 |
7 | 338 |
8 | 935 |
9 | 3067 |
10 | 7182 |
11 | 20064 |
12 | 64819 |
13 | 156968 |
14 | 441084 |
15 | 1408612 |
16 | 3488489 |
17 | 9840608 |
18 | 31145791 |
19 | 78388512 |
20 | 221722954 |
21 | 696757333 |
22 | 1775204952 |
23 | 5031253931 |
24 | 15718503073 |
25 | 40435757688 |
26 | 114779701466 |
27 | 356852697226 |
28 | 925209496348 |
29 | 2629513384131 |
[1,1,3,9,17,46,153,338,935,3067,7182,20064,64819, 156968,441084,1408612,3488489,9840608,31145791, 78388512,221722954,696757333,1775204952, 5031253931,15718503073,40435757688,114779701466, 356852697226,925209496348,2629513384131] |