n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 11 |
4 | 41 |
5 | 127 |
6 | 498 |
7 | 1717 |
8 | 6610 |
9 | 24366 |
10 | 93391 |
11 | 352717 |
12 | 1358826 |
13 | 5200301 |
14 | 20097076 |
15 | 77562773 |
16 | 300786339 |
17 | 1166803111 |
18 | 4539163784 |
19 | 17672631901 |
20 | 68933291834 |
21 | 269129233484 |
22 | 1052113994124 |
23 | 4116715363801 |
24 | 16124221819056 |
25 | 63205303242628 |
26 | 247961973949228 |
27 | 973469736360283 |
[1,4,11,41,127,498,1717,6610,24366,93391,352717, 1358826,5200301,20097076,77562773,300786339, 1166803111,4539163784,17672631901,68933291834, 269129233484,1052113994124,4116715363801, 16124221819056,63205303242628,247961973949228, 973469736360283] |