n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 13 |
3 | 57 |
4 | 255 |
5 | 1149 |
6 | 5201 |
7 | 23607 |
8 | 107345 |
9 | 488721 |
10 | 2227007 |
11 | 10154511 |
12 | 46323507 |
13 | 211396611 |
14 | 964966149 |
15 | 4405717137 |
16 | 20118308687 |
17 | 91880092029 |
18 | 419657355725 |
19 | 1916914550859 |
20 | 8756654087981 |
21 | 40003289475363 |
22 | 182755724339143 |
[1,3,13,57,255,1149,5201,23607,107345,488721, 2227007,10154511,46323507,211396611,964966149, 4405717137,20118308687,91880092029,419657355725, 1916914550859,8756654087981,40003289475363, 182755724339143] |