n | a(n) |
---|---|
1 | 2 |
2 | 16 |
3 | 102 |
4 | 630 |
5 | 4690 |
6 | 34012 |
7 | 287140 |
8 | 2364992 |
9 | 22028490 |
10 | 200930125 |
11 | 2026692954 |
12 | 20118254688 |
13 | 217071252489 |
14 | 2316174126448 |
15 | 26506083938686 |
16 | 301219138880440 |
17 | 3632894429145798 |
18 | 43657425153387876 |
19 | 552138493209771090 |
[2,16,102,630,4690,34012,287140,2364992,22028490, 200930125,2026692954,20118254688,217071252489, 2316174126448,26506083938686,301219138880440, 3632894429145798,43657425153387876, 552138493209771090] |