n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 9 |
3 | 22 |
4 | 114 |
5 | 308 |
6 | 1717 |
7 | 4902 |
8 | 28526 |
9 | 84284 |
10 | 504410 |
11 | 1525500 |
12 | 9311140 |
13 | 28638504 |
14 | 177367949 |
15 | 552532742 |
16 | 3460680278 |
17 | 10888711788 |
18 | 68810154286 |
19 | 218247846932 |
20 | 1389230689596 |
21 | 4435391806552 |
22 | 28403131135554 |
23 | 91183193910620 |
24 | 586877613154252 |
25 | 1892886293567192 |
[1,2,9,22,114,308,1717,4902,28526,84284,504410, 1525500,9311140,28638504,177367949,552532742, 3460680278,10888711788,68810154286,218247846932, 1389230689596,4435391806552,28403131135554, 91183193910620,586877613154252,1892886293567192] |