n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 5 |
4 | 18 |
5 | 65 |
6 | 238 |
7 | 877 |
8 | 3234 |
9 | 11929 |
10 | 44006 |
11 | 162341 |
12 | 598890 |
13 | 2209361 |
14 | 8150542 |
15 | 30068125 |
16 | 110924178 |
17 | 409209865 |
18 | 1509614198 |
19 | 5569110677 |
20 | 20544980154 |
21 | 75792390209 |
22 | 279605352286 |
23 | 1031490797581 |
24 | 3805267877730 |
25 | 14037995932921 |
[1,2,5,18,65,238,877,3234,11929,44006,162341, 598890,2209361,8150542,30068125,110924178, 409209865,1509614198,5569110677,20544980154, 75792390209,279605352286,1031490797581, 3805267877730,14037995932921] |