n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 33 |
4 | 96 |
5 | 273 |
6 | 749 |
7 | 1953 |
8 | 4916 |
9 | 12023 |
10 | 28642 |
11 | 66575 |
12 | 151544 |
13 | 338294 |
14 | 741880 |
15 | 1601048 |
16 | 3403936 |
17 | 7137386 |
18 | 14774713 |
19 | 30219025 |
20 | 61115184 |
21 | 122300146 |
22 | 242312186 |
23 | 475589389 |
24 | 925158391 |
25 | 1784529840 |
26 | 3414565313 |
27 | 6483608230 |
28 | 12221370425 |
29 | 22876263089 |
30 | 42534593868 |
[1,3,9,33,96,273,749,1953,4916,12023,28642,66575, 151544,338294,741880,1601048,3403936,7137386, 14774713,30219025,61115184,122300146,242312186, 475589389,925158391,1784529840,3414565313, 6483608230,12221370425,22876263089,42534593868] |