n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 8 |
6 | 26 |
7 | 76 |
8 | 247 |
9 | 783 |
10 | 2565 |
11 | 8447 |
12 | 28256 |
13 | 95168 |
14 | 323720 |
15 | 1108415 |
16 | 3821144 |
17 | 13246307 |
18 | 46158480 |
19 | 161574043 |
20 | 567925140 |
21 | 2003653016 |
22 | 7092953340 |
23 | 25186731980 |
24 | 89690452750 |
25 | 320221033370 |
26 | 1146028762599 |
27 | 4110596336036 |
28 | 14774346783745 |
29 | 53203889807764 |
30 | 191934931634880 |
[1,1,1,3,8,26,76,247,783,2565,8447,28256,95168, 323720,1108415,3821144,13246307,46158480, 161574043,567925140,2003653016,7092953340, 25186731980,89690452750,320221033370, 1146028762599,4110596336036,14774346783745, 53203889807764,191934931634880] |