n | a(n) |
---|---|
1 | 1 |
2 | 7 |
3 | 35 |
4 | 178 |
5 | 891 |
6 | 4457 |
7 | 22285 |
8 | 111428 |
9 | 557141 |
10 | 2785707 |
11 | 13928535 |
12 | 69642678 |
13 | 348213391 |
14 | 1741066957 |
15 | 8705334785 |
16 | 43526673928 |
17 | 217633369641 |
18 | 1088166848207 |
19 | 5440834241035 |
20 | 27204171205178 |
21 | 136020856025891 |
22 | 680104280129457 |
[1,7,35,178,891,4457,22285,111428,557141,2785707, 13928535,69642678,348213391,1741066957,8705334785, 43526673928,217633369641,1088166848207, 5440834241035,27204171205178,136020856025891, 680104280129457] |