n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 7 |
4 | 27 |
5 | 114 |
6 | 509 |
7 | 2365 |
8 | 11318 |
9 | 55411 |
10 | 276231 |
11 | 1397430 |
12 | 7156089 |
13 | 37023225 |
14 | 193229466 |
15 | 1016141199 |
16 | 5378940051 |
17 | 28638955098 |
18 | 153267403397 |
19 | 824014568581 |
20 | 4448456379134 |
21 | 24104579252971 |
22 | 131055735586767 |
23 | 714741620026542 |
24 | 3908997981612017 |
25 | 21434123083817329 |
[1,2,7,27,114,509,2365,11318,55411,276231,1397430, 7156089,37023225,193229466,1016141199,5378940051, 28638955098,153267403397,824014568581, 4448456379134,24104579252971,131055735586767, 714741620026542,3908997981612017, 21434123083817329] |