n | a(n) |
---|---|
1 | 2 |
2 | 5 |
3 | 14 |
4 | 40 |
5 | 114 |
6 | 323 |
7 | 910 |
8 | 2551 |
9 | 7120 |
10 | 19796 |
11 | 54852 |
12 | 151525 |
13 | 417434 |
14 | 1147145 |
15 | 3145394 |
16 | 8606848 |
17 | 23507190 |
18 | 64093031 |
19 | 174474790 |
20 | 474261691 |
21 | 1287398452 |
22 | 3490267820 |
23 | 9451319304 |
24 | 25565098825 |
25 | 69080289074 |
[2,5,14,40,114,323,910,2551,7120,19796,54852, 151525,417434,1147145,3145394,8606848,23507190, 64093031,174474790,474261691,1287398452, 3490267820,9451319304,25565098825,69080289074] |