n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 5 |
4 | 16 |
5 | 53 |
6 | 206 |
7 | 757 |
8 | 2780 |
9 | 10481 |
10 | 39898 |
11 | 146981 |
12 | 531752 |
13 | 1939885 |
14 | 7397846 |
15 | 29864213 |
16 | 122842036 |
17 | 488455217 |
18 | 1830814610 |
19 | 6508723141 |
20 | 22667908448 |
21 | 81343971941 |
22 | 312864734302 |
23 | 1280329420085 |
24 | 5332923123596 |
25 | 21687872072113 |
26 | 84397157118026 |
27 | 313673593771877 |
[1,2,5,16,53,206,757,2780,10481,39898,146981, 531752,1939885,7397846,29864213,122842036, 488455217,1830814610,6508723141,22667908448, 81343971941,312864734302,1280329420085, 5332923123596,21687872072113,84397157118026, 313673593771877] |