n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 14 |
4 | 43 |
5 | 142 |
6 | 494 |
7 | 1780 |
8 | 6563 |
9 | 24566 |
10 | 92890 |
11 | 353740 |
12 | 1354126 |
13 | 5204396 |
14 | 20066492 |
15 | 77575144 |
16 | 300572963 |
17 | 1166868646 |
18 | 4537698722 |
19 | 17672894044 |
20 | 68923788698 |
21 | 269129985796 |
22 | 1052051579012 |
23 | 4116719558104 |
24 | 16123810230158 |
25 | 63205319996092 |
26 | 247959300028484 |
[1,2,5,14,43,142,494,1780,6563,24566,92890,353740, 1354126,5204396,20066492,77575144,300572963, 1166868646,4537698722,17672894044,68923788698, 269129985796,1052051579012,4116719558104, 16123810230158,63205319996092,247959300028484] |