n | a(n) |
---|---|
1 | 2 |
2 | 8 |
3 | 28 |
4 | 98 |
5 | 350 |
6 | 1274 |
7 | 4706 |
8 | 17576 |
9 | 66196 |
10 | 250952 |
11 | 956384 |
12 | 3660540 |
13 | 14061140 |
14 | 54177740 |
15 | 209295260 |
16 | 810375650 |
17 | 3143981870 |
18 | 12219117170 |
19 | 47564380970 |
20 | 185410909790 |
21 | 723668784230 |
22 | 2827767747950 |
23 | 11061198475550 |
24 | 43308802158650 |
[2,8,28,98,350,1274,4706,17576,66196,250952, 956384,3660540,14061140,54177740,209295260, 810375650,3143981870,12219117170,47564380970, 185410909790,723668784230,2827767747950, 11061198475550,43308802158650] |