n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 12 |
3 | 65 |
4 | 351 |
5 | 1897 |
6 | 10252 |
7 | 55405 |
8 | 299426 |
9 | 1618192 |
10 | 8745217 |
11 | 47261895 |
12 | 255418101 |
13 | 1380359512 |
14 | 7459895657 |
15 | 40315615410 |
16 | 217878227876 |
17 | 1177482265857 |
18 | 6363483400447 |
19 | 34390259761825 |
20 | 185855747875876 |
21 | 1004422742303477 |
22 | 5428215467030962 |
[1,2,12,65,351,1897,10252,55405,299426,1618192, 8745217,47261895,255418101,1380359512,7459895657, 40315615410,217878227876,1177482265857, 6363483400447,34390259761825,185855747875876, 1004422742303477,5428215467030962] |