n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 10 |
3 | 31 |
4 | 96 |
5 | 296 |
6 | 912 |
7 | 2809 |
8 | 8651 |
9 | 26642 |
10 | 82047 |
11 | 252672 |
12 | 778128 |
13 | 2396320 |
14 | 7379697 |
15 | 22726483 |
16 | 69988378 |
17 | 215535903 |
18 | 663763424 |
19 | 2044122936 |
20 | 6295072048 |
21 | 19386276329 |
22 | 59701891739 |
23 | 183857684514 |
24 | 566207320575 |
25 | 1743689586432 |
[1,3,10,31,96,296,912,2809,8651,26642,82047, 252672,778128,2396320,7379697,22726483,69988378, 215535903,663763424,2044122936,6295072048, 19386276329,59701891739,183857684514,566207320575, 1743689586432] |